If he did then the American justice system will surely punish him for it and you won't have to worry about Trump anymore!
Two thirds of the supreme court judges are republican, one third appointed by Trump himself. Also he could likely just pardon himself if he wins. So I wouldn't bet on it
Edit:
People were screaming about the coup shit in 2016 and it didn't happen. The same joke won't work again.
If people forcefully entering the capitol and claiming Trump is still the president is not a coup attempt then what do you think one looks like?
Also "the democracy didn't collapse the first time so what could go wrong the second time?" Is not that strong of an argument