Was anyone able to manifest hair transformation?

My hair used to be beautiful when I was a child, but during my teens it has become super thin, fragile and frizzy- nothing like what it used to be! I’m trying to manifest my childhood hair back but not sure how to do that, seeing the current hair in the mirror every day. Recently, I got a haircut, thinking it might improve my hair, but it made it look even thinner. It really bothers me and I’m not sure how to feel it real. Any advice?