I don't consider myself low value. And I don't like low value guys. I have seen plenty of high value guys who are still needy. To me neediness is a psychological and cultural thing rather than attraction or value based thing. I have seen high value girls who are extremely smart and beautiful being needy.
I myself have had so many relationships so it's not like I'm in deep need of a relationship. Neediness to me is a glue that holds the relationship together.
I don't like these tricks that you talk about. It's too mechanical, like you said to withhold sex. How can someone have a relationship where they're constantly thinking and planning the next move in the relationship, that already looks quite unhealthy and low value in my opinion. High value relationship would be something that flows effortlessly and spontaneously with no planning on any end. The kind of relationships I had, those people weren't even in pickup, nor any training, and they could effortlessly maintain intimacy with me without having to make moves.
To me it's all about frequency and not so much about how many people you date or socialize or kind of game.
If you found the right person, which is more likely to happen if you build your law of attraction vibration and actually wait for the right person to be in your life (this does not mean you shouldn't approach, but you shouldn't make it a score game, just wait for something natural to build up over time, meanwhile still socializing) but once you lock that right person, you feel that "click" and then you find someone on your frequency, then they don't play games with you, as a result, you don't need to do anything special to hold that person.
This only happens when you like and love someone for who they are and they like and love you for who you're, then there is no competition, because you already found what you wanted, also I don't really like this low value and high value stuff. Value cannot really be decided by anything. I could be with a guy who is homeless today but a millionaire tomorrow.
Try to focus on real values like commitment and authenticity rather than fake hyped social values.