What should I do?

I really need advice, So... im in a friend group that I think is toxic cause my so called friends backstab me. They always tell my secret to otherss even though I trusted them to keep it to themself. They always blame me for everything. I really feel like i don't belong with them anymore. I always get left out and always have been third wheel. ALL I WANTED WAS A TRUE FRIEND.

Pls I really need advice on what I should do

Thank you.