I think you might be right. I don’t think Trump wants to win, he wants to keep his grift going and that means running indefinitely.
I don't think he wants that, but rather he has to. Plus at least half of it is just performative to try and keep his lies going. I'll keep saying it, even he knows he didn't legitimately win in 2016 (and by that I don't mean the election was "fixed" like he claims about 2020, but rather that he only won because of illegal cooperation of a foreign government), which is why he was still campaigning about it the entire time he was in office.
Hell, the only thing he enjoys about it, blathering out whatever nonsense his brain shits out his mouth in front of an audience even doesn't seem to bring him as much joy with him having to constantly complain about crowd sizes and shit.
Imagine the alternate universe where Turmp just pivoted to getting paid to speak like that entire grift of an industry, with no pressure to actually live up to his promises, and he gets to rake in cash duping rubes and the US didn't have him fuck things up.