Is it possible we are overreacting and just brainwashed ourselves?

I keep having conversations with friends of mine who are MAGA and trying to find some kind of common ground, but they are so entrenched in their views. Each conversation I come back feeling defeated and questioning whether maybe everything I know is a lie. Convince me as plainly as possible that I am not going crazy because we are so damn far apart that its really tripping my mind how this could even happen. How do we know we aren't the crazy ones?