We keep seeing examples of a Uniparty. The reason I've discovered for this I call the first Iron Law Of Politics: The Worst Of the Worst want to be a politician first. Trump was a businessman most of his life and only had to deal with Politicians when necessary for a deal. He simply had to learn the hard way how to deal with routine backstabbers.
He is obviously a smart guy who knows how to get around roadblocks. To really win an effective coalition he has to bring the people he needs to office with him. To blame him for not getting the cooperation of the corrupt ones already in place is a feature, not a bug.
The problem with your idea of Trump bringing in people is that he hasn’t shown any ability to do so. He had majorities in 2017, then lost seats in 2018 and 2020, and wasn’t successful in getting his people elected in 2022. No reason to believe that would change in 2024.