I do so by simply asking a lot of questions and playing the Socratic method with them. It takes a lot of time, patience, and energy, but it works, more often than not.

Everything I've read supports this. You have to spend a lot of time and effort to reach someone. People change their beliefs because of their peers, not because of facts. You have to get them to see you as trusted, as in-group, before they'll listen.

It sucks, especially when there's mass media promoting toxic messages that people can just go wallow in.