No, everything really happens for a reason and I would never want to go through puberty again tbh.
+ it's not like, if you got the chance to do it all over again, that you wouldn't make other mistakes.

It's human to make mistakes, you learn from them and I'm quite happy with who I am right now.
It can always get better but that's the fun part about life, it'd be boring if everything was always perfect tbh.