I am so sorry keberoxu that you've had such tough times. But I admire your courage, as you obviously sorted yourself out sensibly with medication and by distancing yourself from various toxic contacts.

The people about whom you're concerned are presumably adults, and should be left to find their own solutions (or not). You can't be responsible for their lifestyles or their lack of motivation to change.
Not only will you never manage to change them unless they themselves are willing, you risk going backwards with your own progress, which will do nobody any good. Going 'no contact' sounds to me to be the healthy way for you to deal with what's going on with them.

Your thread title says it all, and in my view you're quite right. Don't sink your own little boat trying to pull unwilling folk out of the water!