Maybe the way out is a commitment to more localism / federalism?

An acknowledgment that there is a bimodal distribution of culture and mores that will never ever get along

Want super high taxes and generous social programs? And a commitment to art and culture? Great, we’ve got plenty of cities for you

Want low taxes and a business friendly climate? You can own guns too! Great, let me introduce you to Texas

Teach what you want in schools

White supremacy? Have at it. Creationism? Knock yourself out. Just let people know what you’re planning up front

Decide on a hyper local basis how your police force will interact with the polity

The only bare minimum is upholding the constitution and protecting civil rights (traditionally understood), but aside from that just let localities drive a wide berth as far as how they want to run themselves

(The only other way out is a serious commitment to centrism but we seem so far past that that the mere suggestion seems positively quaint. Naive even)