Trump won't stand in 2024. He'll be purposely vague to his base to make them think he will, and continue to fund raise keeping the grift alive for as long as he can. I am sure he'll seek to support someone else in his family, but depending on possible legal cases, he may well just back someone else as long as he can get in on a grift there too.
All signs are that Trump is gradually losing his grip, not helped by defending the vaccine, and the cultists will latch on to someone else between the mid terms and 2024. The question is who is crazy enough; but there seem to be a fair few candidates.