I think Trump will continue to be a huge influence in the Party. I think he will play a role in the 2022 elections for congress and I expect him to especially attempt to "overthrow" GOP House members that shunned him.
If he suggests that he might form a 3rd Party for the 2024 presidential election, that will shake up some in the GOP because they know they cannot win a damn thing if the Trump base deserts the GOP. (Not that the GOP will ever win the White House again with Dominion managing the vote.) Otherwise don't be surprised if Don, Jr. tosses his hat into the ring with Hawley and Haley and 20 other wanna-be narcissistic candidates.