School bullying?

I used to get bullied by my friends when i was in middle school, I suffered from so bad verbal bullying and abuse from my friends, and i didn’t say a thing even to my family. And it continued until i changed school in high school, and i became introverted and antisocial. Then a group of girls approached me and made me their friend, and again I suffered from verbal bullying, it was less than middle school but still. I cut everyone off. And I keep wondering if nothing of that happened will my personalty be different. I’m so shy and i can’t stand for myself. I can’t say anything mean to anyone even though when they’re mean to me. And I’ve always believed in karma that everything you’ve done bad you will get punished for it, until today, im 23 years old now. And today was one of the students wedding and i decided to go. I’ve seen everyone who bullied me then, and they “acted” nice like omg where have you been we missed u and so on. I’ve never been so disgusted. And i found out that everyone has been doing great, some got engaged, some have their own business, and some of them are studying masters. And I’m just there, never been in a relationship, looking for a job and my life is mess. The only good thing is i got a huge glow up lol that’s it.
I feel so sad and I don't know why life so unfair.
School bullying?
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