I believe, Mr. Wish that you are being naive and thinking of a blatant dictator and a coup in the model of a tradition despotic dictator. Trump will attempt to hide his dictatorial ambitions in what he is already doing.

He is already stripping government into a model of absolute Exective Branch power. With Barr he controls the DOJ, he's stacking the courts. He's using government to fill his own coffers ect. He will obfuscate his dictoral under Presidental mandate.

In my worst nightmare I could see him serving two terms and pulling the strings of a Jared Kushner or Ivanka presidency- gag.

Even if he is defeated and leaves office he can run again.