I will give you a break from pessimism and suggest a plausible scenario for the GOP in 2023-4. Liz Cheney runs for president, not because she thinks she can win, but because she believes she can take down Trump. And she does. She turns him into a mass of quivering jelly during a series of debates. Trump’s approval ratings plunge, and several other GOP candidates jump into the race. American politics become slightly more normal.
Sounds a bit like a GOP version of McCarthy in 1968, no?