pls help

how do you leave someone that is so fucking toxic, that keeps spouting shits behind your back,that keeps saying your secrets to someone, and that keeps dragging you in their problems. i really need help because theyre getting too fucking toxic with all of their doings and im getting tired. theyve already caused me to think harmful shit. (not murdering dw )im sorry if im asking on this site, i have no one to talk of this im really sorry.ヾ(❀╹◡╹)ﾉ~