Will Trump immediately call into question the legitimacy of the election? Almost certainly.
Will Trump directly accuse the democrats of organized voter fraud? Almost certainly.
Will Trump refuse to acknowledge that he lost? Almost certainly.
Will Trump blame the fake news media? Absolutely 100%.
Will Trump cal his democratic opponent a criminal? Probably.
Will Trump look for ways to try to stay in office, like for instance call for a re-election due to the "massive voter fraud" that "people" are talking about? Probably.
Will Trump actually have the guts to try to stage a coup for real? For really real? I seriously doubt it. He's a poser, a conman, a phony - not a revolutionary.
You're forgetting something. Unless a newly-elected Democratic President is willing to immediately flush his re-election down the toilet, Mr. Trump losing means he's probably going to jail for the rest of his life. Scavengers and thieves can get vicious when cornered.
I could see a FBI agent tapping Trump's shoulder from behind and saying 'Sir, please come with me' and handcuffing him after the Jan 2021 inauguration is over and the new Democratic president is sworn in.
That would be the most satisfying historical moment of this century. That's why I know it won't happen.
