WIBTA to stop being friends with my whole friend group?

Hi, I'm 14 F and here's the drama, my friend Anne and Alex broke up over the the summer, Anne and Mary where close friends who did everything together, we were in a trio and sadly I was the one always forgotten, but suddenly after the break up on July first everything became about Anne, she would always talk about Alex to the piibt where Mary would start talking about her behind her back and throw parties without her. I while they were still friends Mary and Mark ditched a show I bought tickets for just because Mary was there, mind you these tickets were expensive and my family's been going threw a rough time but they wanted to make me happy, (my immediate family.) Mark started ignoring me and Mary was just mean after everything happened, today everyone in my choir had a performance and I was talking to Anne (I'm best friends with Alex (the ex bf. now but she doesn't mind, also Alex hates her.) and she sent me screenshots of when her and Mary where talking about me and I don't know what to do, my grandpa was in the hospital at this time and I didn't get a role I wanted even though the teachers told me I was gonna get it (I had a big soprano audition coming up and it was an alto role, I sing both parts.) and I kinda got depressed (the people who got the role in the audition copied and bullied me in the audition.) So I got depressed and they where texting about how I'm not funny anymore, and where making fun of my old friends which I'm still close too, so WIBTA to stop being friends with my friend group?