I’m sorry, OP. I come from a family like this and the best decision I made was to go away for University and make friends whose views and values aligned better with mine.
Same thing when I found a job. I “made” my own (non-biological) family, if that makes sense. I see my blood relatives at holidays and other events, say the required hellos and goodbyes, and leave when I’m ready.
I don’t have time for that shit. And I know it’s hard to see people you love behave this way, but you obviously turned out differently and that means that you can do better…and maybe even inspire some of the younger folks in your family in the process.