Oh, yeah) Such "beautiful" school assignments like speech or essay writing and the worst one is paper research. Anyway, you have 2 options: write or buy it. If you don't want to spend a lot of time to sit with a piece of paper, you can try this or any other writing service. If you don't want spent money, I can recommend this algorithm for speech writing:
Create a structure
Brainstorm message you want to provide
Explain every message (shortly, approx. 3-5 sentences per message)
Review and clean your speech.
You should make some iterations of writing - nobody can do this for the first time. Make some drafts, post them, for example, here -> collect feedbacks -> repeat steps. This is, I say, the most effective way to write a good speech. Feel free to ask more questions and feedbacks.