Come on man, get off your high horse. European here, and lets just say that Europe has its own major problems. Italy has Salvini, UK Boris Johnson (trump mini-mi), Sweden is bungling the covid-19 pretty badly, Hungary has Orban, Poland messed up their Judicial system, Sarcozy is going a criminal investigation, and Macron had hundreds and thousands of protestors just last year.
Almost every country can produce bad/authoritarian/populist leaders time to time.
The point is to learn and not keep them in long term. Trump is probably done, and he will loose next election badly. These are his narcissistic hissy fits, as he knows he is losing badly. The US has a very healthy democracy in the long run, and term limits help on this. There is no chance in Trump turning into a Erdogan, or Hungary's Orban. He most likely will be voted out this upcoming election.
Just for curiosity, where do you come from?