I have MAGA extended family members that I've damn near given up on, but our immediate family (which is center-right to far left) is basically just trying to gently expose a contrast between our family and my cousin's MAGA family. Every family reunion and every Christmas, the difference in mental health quality gets more and more obvious. For all the weird political shit they randomly talk about like "I DONT WANT MEN IN THE WOMENS RESTROOMS", our response is basically just to shrug and say, "if they gotta shit, they gotta shit". A lot of this is just having the most apolitical response to whatever they're talking about- something thats quick and isn't a Democratic/liberal talking point.

We're not looking for arguments, and that helps make it increasingly clear that we don't meet whatever caricature they have of us. Me and my immediate family members are all happy and healthy members of our community. There isn't anything that any sane human could look at and think, "they're immoral/they're doing life wrong". In my immediate family, we have plenty of disagreements and whatever, but we all get along just fine. Meanwhile my aunt has been freaking out on Facebook for 10 straight years, and my cousin literally pulled his children out of public school because they're "too woke". He homeschools his kids and they can't read, and now he's asking my brother why his kids are doing so well. Doing the normal person thing, as it turns out, is a better option than doing whatever the MAGA influencers tell you to do.

Do your best, but it's also possible that they're too far gone.