Can’t get over regret

All of highschool I was isolated and never went out. I had really bad acne and felt that it prevented me from being myself. Went to college and my freshman year I got intensely bullied. During this tule I was wearing makeup to hide the acne, but didn’t want anyone to know. I’m a straight male. I came down one day and was clearly wearing makeup, which everyone pointed out. Instead of owning it I had a panic attack and said this girl put it on me. The girl wasn’t very attractive, so I got bullied super bad for it. I genuinely don’t know what the fuck was wrong with me and why I was so insecure. My acne wasn’t even bad, but it got really bad due to the makeup. This was 2 years ago but I feel a huge sense of anger for letting everyone control my life. Everyone believes a humiliating lie that I told. People forgot about it and don’t really bring it up but it haunts me.

The year after that happened, I joined a fraternity. This is why people forgot, because now I was “cool”. The fraternity was a good experience, but I eventually got severely depressed and went home. Started working out and never stopped. The anger from the past has motivated me, but it’s also fueling a shit ton of regret. I’ll lay in bed with an extreme sense of anger until I go to the gym or play basketball. Basketball was the sport that I got bullied in and want to make sure it never happens again. I know that I need to address the anger from the past but feel consumed by it. It helps me grind out in life, but it also makes me extremely bitter and hateful. I wish I knew who I was before going to college and needing to be bullied to realize my own self worth. I need help