Never try to fix people that dont want to change.

Since I was like 18 I always wanted to fix my friend group, they used to lie about others, after like 5/6 months of trying to fix everything and get everyone to be together again, I started lying myself to just manipulate them to be on better terms, it backfired quickly and i realised I am no different than them, if you'll start to change people that are horrible you'll become horrible.