Ranked Choice Voting makes it easier to vote for “less bad” candidates.

RCV also tends to work against polarization, since it rewards candidates who are at least acceptable to a broad swath of the electorate.

It may not be the “answer” for all that ails the American political system, but it would help.

ETA: Unlike many other reforms it's also doable within the constraints of the current constitutional order and is hard for SCOTUS to torpedo (though I suppose I shouldn't underestimate SCOTUS).