I had toxic friends that basically bullied me for around 2 years in middle school.

It started with the five of us. We would always get in “arguments” which was basically randomly ghosting each other and then becoming friends again. They insulted each other to the point that i felt scared to actually share my feelings. One day they dropped one of the girls. I still feel guilty about that tbh… Couple months later in the last month of school they dropped me. No reason given. All i did all day was cry. I was so depressed to the point where i was on the verge to self h@rm. I had no friends for all the fun activities for the last week of school and i had no friends heading into my new classroom. I’m over them now that i have new better friends. But i still wonder why me? What did i do?