I just wish someone had come up with a novel approach to mend relationships between leftists and their MAGA-brainwashed parents, but reading the 40 or so replies here and taking your advice and popping over to my favorite redlib instance to read some of that community...it looks like success at improving these relationships is incredibly rare.
I do quite like the approach laid out by Honkology in their "why facts don't change people's minds" video and have been taking that approach for the last 9 years, but not only has it failed to move them one inch out of the cult, they have only gone deeper and deeper. Mentally, I have accepted the fact that it's not my responsibility to fix them, but emotionally, it's difficult to accept.
On one hand, all the replies here from people in similar situations has made me feel less alone in the situation. On the other, it has also made me really sad about how easily tens of millions of people could be turned against anyone who doesn't look like them, think like them, or belong to their same economic stratum.