I think my face was ruined by braces how can I fix this?

I'm almost 20 but I had my braces removed my sophomore year of high school and got my wisdom teeth removed when I was 17. I had a pretty bad overbite and my lower teeth were very crowded. I think having braces has changed my faces for the worst, my face is long and my cheeks are now flatter and I have a weak chin (I think I look too masculine). How can I go about fixing the changes that were made to my face? Should I stop wearing my retainers and let them move back?

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