Alternatives to failed PRP at age 20?

I'm 20. Started thinning around 16. I have lost a considerable amount of hair and now look 40. While although I don't have "bald spots" the top of my head is quite thin and my hair line is running away. I have had 3 PRP treatments spaced 6 weeks and have had a laser hat used for 30 min 3 times a week. I don't think it's changed a thing. Money is no issue but not having hair is. I am in need of a solution as I can't really afford to go bald.