Trump is a symptom of the disease, not necessarily the cure.
But assuming he is AND you exclude RINOs, who are you going to start over with and how are you going to build a party large enough to be effective?
Trump exposed the traitorous GOP and commented harshly about them to us all many times, but still had to work with them when he was in office.
It’s my belief, possibly erroneous, that after 2020 nearly every Republican, or at least all 81 million Trump voters, would have seamlessly gone with a new American party because it was clear that Ronna Fucking McDaniel and the entire GOP, including my House rep, were going to do FUCKING NOTHING about the steal. Nothing, that is, except beg money to help fix it and then go on a posh retreat in Florida to look like they somehow were doing something. Assholes all.
Yes, it would require recruiting true patriotic Americans to run, elections would have to be fixed by WE THE PEOPLE (no federal or state bureaucracy is going to do it for us) the left would have to be defeated in all ways, but after the GOP literally DEFECTED and abandoned Americans, as it still is doing to this day, I see no other option really.