Idk if this is bullying but

It all started when I had an argument with one of my friends because she called me a name, I didn’t really take notice of it but then she started talking about me to everyone. She started leaving me out and pretending I wasn’t there. I had a friend who always used to stay with me and we all were in the same friend group. We sit as one big table so basically me and her would sit on the table but away from each other. Me and my friend were speaking about something that happened a few years ago with our old friends and she randomly assumed we were talking about her. Another person out of the friend group starting giving me dirty looks to me and my friend too.
Skip a few weeks later.
I got really close with someone else in the friend group and I told her everything about what was happening and if I should tell the teachers, I also told her about personal problems that I never tell anyone. After the weekend, I noticed something different. I tried to talk to them but they all just blocked me out or just gave me really short answers. I sat with them at lunch and I was at the end while my ‘friends’ were at the other end of the table. I moved closer to them so I could join in the conversation but they turned their back on me and started talking about things. I got ready to go bcos my friends were and I tried catching up and they just kept ignoring me.
I knew that the friend I got close to told everything I said to them and made them all turn on me. They all started hating me and yh.
I could always hear them talking about me and when they would walk past me, they would say things to eachother like “she’s so ugly”. I didn’t really understand why it happened.
Now it’s still not sorted. It’s been a year. There was another girl who I was okay with cos we had the same interests and she wasn’t like the others. She liked reading and things like that. We used to do this learning thing on the weekends and that was the only time we actually spoke. She always avoided me at school.
I literally feel like everyone hates me in school. I have no friends in my lessons, everyone hates me because my old friends were popular and obviously they spread rumours.’
I’m also antisocial.
I hate everyone.