I felt regretful when I looked at how much I wasted
Do you regret a lot of the choices that you have made?
Yes it has, my life is such a waste.
As you should feel regretful, being wasteful is very selfish for yourself and the world. But if you still feel that towards yourself, that is not normal and you need to see a therapist to make yourself better.
I don't want to be a better person, I'm perfect as I am.
I do not think that is the case if you have regrets that you have made in your life. You should only regret the things that you have done wrong though.