I don't think Trump thought he would win, so he was unprepared, and he had some of the most incompetent people possible around him. He and the people around him will be prepared this time. A plan has already been drafted (Project 2025) by, presumably, intelligent people at right-wing think-tanks. Also, his rhetoric has changed, becoming similar to other historical and current dictators, and his "policies" have become more fascist (e.g. rounding up 11 million people in the U.S. for detention and forcible relocation).
Furthermore, while he was president, he did do some pretty dictator-like things. He had federal officers in unmarked vans abduct protestors with bags over their heads. He had the US Marshals assassinate Michael Reinoehl. He tried to get election results changed. And he tried a coup.
I think his, and his future administration's goal will be to establish a one-party-rule, similar to Russia's, with a more christofascist flavor. His and his family's personal goals will be to enrich themselves by selling-out the state, and the christofascist stuff just provides them with the coalition they need to do so.