In this case make yourself into an amazing and exceptional guy who brings a lot of value to the table.
Have a life purpose, have a good career, have your finances in order, be well educated, be spiritual, know how to give her amazing sex, know how to build deep intimacy, be in good shape, have a nice wardrobe, have a cool social circle of friends, have a cool house/condo, have some cool hobbies like travel or photography, be well-groomed.
That above is basically every girl's dream bf/husband.
But really, if you just learn to give her deep emotional sex that will be enough for her to think you're amazing and get addicted to you. Deep emotional sex is the way into her heart. The rest is window-dressing.

Of course lines are wrong. Why? Because lines interfere with your ability to be playful with the girl. Playfulness requires genuine spontaneity.
It is like you're trying to fake laughing or fake partying. You must really laugh and really party. You can't memorize lines to party. That's just fucking moronic.
Well, we all start with lines. But then eventually you learn the key insight that: that whole point of game is to play with the girl.
You stop asking questions when you are truly in a play frame.
You're not a in play frame because you are stuck in your logical mind, afraid of rejection and caring out outcome.
I actually had an Awakening on how to talk to all women. The Awakening was PLAY. I realized that all game is just PLAY.
You are missing the PLAY Awakening and you will suck with women until you have it.

Go approach 5000 women and go on dates.
The pain of women rejecting and dumping you for your weakness will make you strong. You are not going to learn this skillset other than through massive pain and rejection.
Get rejected so much you stop caring. Die inside from all your mistakes.
Rapport is built AFTER attraction already happened.
You need to learn basic pickup theory. Stop trying to reinvent the wheel. Attraction theory is 100% known and proven. Just study it. There is zero mystery to what attracts women.
No

1) Develop passion, via LP
2) Develop a Love for life, via spirirual awakening to Love
3) Develop charisma
4) Expose yourself to massive experience in socialization
5) Set the intention to become charismatic, passionate, and humorous no matter what, even if you don't know how.
Humor is an attitude more than a technique. Same with passion.

Yes, commitment is emotionally challenging because commitment only makes sense from the POV of an attractive guy with many options if the girl is exceptional. There is little desire to commit to an average girl.
For commitment to make sense she has to be really amazing. But most girls are not that.
Also, commitment means losing years not developing one's game. And the longer a guy wait to development one's game, the harder it becomes. Also the sex and even the relationship will start to get stale after some years unless special measures are taken. So there is a fear that commitment will lead to mediocrity.
Having very high standards makes commitment very challenging. In a sense commitment requires surrendering or lowering one's standards.
From the male POV, sex is a daily requirement but commitment requires something exceptional. Which is why guys tend to have sex but not commit. If a guy waited to only have sex with girls he was willing to commit to, he would be starving like a homeless dog waiting for years for the right girl to come along. And then he would fuck that up with neediness.
So ironically girls are attracted to the guys who are least likely to commit. These are the guys who have so many options that commitment makes little sense. Because a guy who doesn't have all those options will be super needy and repel most girls. You girls are attracted to the most detached guys, and then you wonder why he won't commit.
The guy who would commit to you, you have no interest in sleeping with. He doesn't make you wet or emotional. And your sleeping decisions are purely emotional, not logical. Hence you keep hooking up with guys who won't commit.
The more arousing the guy the less likely he is to commit. That's how this game works. You have to find some sort of balancing point. You can't just chase the highest arousal. You have to make sacrifices. You can't get it all unless you are bringing massive value to the negotiating table.
Sex is a value exchange. And everyone is trying to leech maximum value. Everyone is trying to get something for nothing. And then suffering ensues of course because leeching and theft are self-undermining.
In a sense, when you are dating you are trying to steal sexual value. You aren't doing this consciously, but subconsciously that's exactly what all your arousal and emotions are doing. Your emotions precisely motivate behaviors which steal sexual value. This survival mechanic is so deep that you aren't even aware it's happening. To you it just feels like romance. When you get super attracted to a guy so much that you can't stop daydreaming about him, that's because you know he has more value than you, and that locking him down would be a really good deal for you. It's like walking into a car dealership and seeing your favorite car 50% off. You are giddy with joy at the bargain you just found and you want to pounce on it immediately before someone else does. But of course no quality car is ever 50% off unless there is something seriously wrong with it.
Bottom line: If you want the best car in the dealership you should expect to work hard and pay a lot for it. If you don't want to pay a lot, then expect a mediocre car. Madness is expecting the best car for dirt cheap.
Men's commitment phobia is their emotional way of maximizing sexual value.

You did good.
Yes, keeping a convo going, and keeping it emotional vs logical is the core of game skills. It's not easy to learn that. Takes massive practice.
Also, when you approach a walking girl, you have to approach very assertively, forcing her to stop and commanding her attention. No meek, half-assed, gay approaches. Stop her like you are the police. And be clear about your intent.

You'd have to use the break to stop it. And check that it doesn't have security cameras. This would require a low traffic elevator.
Well, horny mode is mostly good enough. But there are degrees to it. You gotta pump up her state so she's feeling adventurous, slutty, and looking for fun.
You learn it through lots of experience pulling. Keep leading and pulling. You'll get lots of failure and each one will teach you valuable lessons so your future pulls go smoothly. Pulling is an art you can only learn through massive practice. You should have tried to pull that girl to the bathroom just to learn a lesson from its failure. Stop thinking of this in terms of sex and start thinking of it in terms of lessons in pulling. Practice pulling girls even if you think it will fail. It's better to pull and fail than to just wave her goodbye and never see her again.
Do 50 failed pulls and you will learn how to pull.

I had zero skill and I'm not built different. It's just massive experience.
Getting failed approaches means nothing after a while. 10 failed approaches is a typical night in pickup.
You just need way more approaches.
It can feel like that. Warm up is important. But you also build up skill which doesn't go away.
It takes thousands of approaches to get good.
Your first 1000 approaches will suck. It's no problem. You will get a tiny bit better from each approach.
You just need way more approaches and to trust the process. You are guaranteed to get better if you do 2000 approaches.

Work for what? Getting the friend?
If you are trying to get the girl, not her friend, then don't hit on her friends. Just be friendly and nice to them.
The best approach for handling friends is to give them a flattering complement, a bit of small talk, then focus back on your girl. Do not get too distracted on her friends. Focus on your goal, which is to run off with the girl you like.

This is a quality problem.
The intimate kind of sex you offer is gonna be very powerful once you find the right girl who can appreciate it.
Don't fit in, find a girl who fits what you're dishing out. Then magic will happen.
What you're offering is actually something many girls dream about but can never get from a normal guy. So this raises your value.
Probably the #1 complaint girls have about guys is that they aren't intimate enough. Because most guys fear intimacy. Intimacy requires higher development and consciousness than dirty sex does. Although ideally you weave the two together.