I think a big factor (maybe even the biggest one) here is that people seem to overwhelmingly be voting AGAINST something/someone instead of FOR something/someone. In the US it's made even worse, because people were brainwashed into believing they only have two choices, so if they're against choice A it automatically means they must vote for choice B, warts and all, because otherwise their vote us "wasted" (which is not even remotely true or accurate, but that's another story).
I don't know if there's a way to even fix it anymore, because the polarization and tribalization of societies went so far it is scary. But hey, Biden supports Israel, so let's vote for Trump instead. Because he will clearly not support Israel, he will immediately stop selling bombs to them and he'll bring peace to the region, right? Sigh...