I think the problem is that half of the country (has been made to) wants to sabotage itself. Therefore, they elect and keep in power someone that gives them exactly what they want.
Yeah, the way the Democratic Party self-destructed was indeed enlightening and frightening. And they continue to point fingers at each other and present specious arguments why they failed in the last election.
Meamwhile the Republicans, while making headway, aren't doing it in a way that will last beyond the next Democratic administration. I'm speaking of the overuse of executive orders when legislation is what is required.
DOGE has destroyed institutions that will likely not recover in the next Democratic majority term. If they sell off the federal lands or damage them with resource extraction, Dems probably wont have the bandwidth to fix that either. Those are just two examples but there are probably many more.