Y would they do this

I have friends whoi have detached myself from because they were toxic. They would use codenames, and whisper but always tell my its none of my business or i dont need to know.

Today one of them posted a meme for the school to see. It was of a man choking and cat. They lables the cat (cat is also my nickname) as "ugly ass (my name), and themself as the abuser.

im crying cuz i didnt do anything to provoke this and literally just stopped hanging out with them and eating lunch with them. I dont know what to do because when my bff confronted them they said

its a racist girl from art camp ( i never went to art camp) basically someone else with thr same name.

Im crying because i dont want burden or worry my family. My sister just lost her child a month before giving birth, my mom just got out of the hospital and my father is taking care of her the best he can ( my parents are legally disabled). Idk what to do and im crying because as soon as it was posted people immediately messaged me asking if it was me.

Ileft my last school because someone threatened my life, and thisis the only good private school i. My area. I want a good future, and im scared that i might have to leave a good school and ruin my future. Im crying and shaking and idk what to do.