at this point any claim that Trump could make a "come back" or "refuse to leave office" will just hurt US democracy.
lost is lost, these are the rules of the game.
it's a bit weird that Trump supporters don't see that, but makes sense, it's simmilar with Bolsonaro in Brazil.
This is the first time it happens in the modern American election let's see how things will play out, let's see how stubborn Trump is, how they are going to kick out Trump, will they need a court ruling on this, or will the military force Trump to vacate the position.
It's only over a month to go, I think Trump is buying time he is weighing his option, once he sees how futile it is to hang on he will eventually give up, why on Earth he wants to hang on when he wants to have more time playing golf.