You can look at countries that have remained democratically stable for a long time. The UK and Switzerland come to mind. I live in the UK and we have an odd system that I used to consider a bit of a gimmick for the tourists to take photos of but appreciate more these days. Basically the fact that we have a king but with severely curtailed powers delegated to the elected folk makes it very hard for one of them to appoint themselves effectively king, especially as the military all swear allegiance to the actual king (or queen).
It's partly effective because they system wasn't really designed but evolved out of a lot of bloody power battles, going back to at least 1215 https://en.wikipedia.org/wiki/Magna_Carta
I used to think it was silly but if you look at rival European powers they had Russia with Stalin, Hitler in Germany, Napoleon in France, Franco in Spain, Mussolini in Italy etc. The UK is one of the very few which avoided having a dictator.
[Edit - I was kind of talking about the wrong thing - avoiding dictators rather than Trump types]
It's partly effective because they system wasn't really designed but evolved out of a lot of bloody power battles, going back to at least 1215 https://en.wikipedia.org/wiki/Magna_Carta
I used to think it was silly but if you look at rival European powers they had Russia with Stalin, Hitler in Germany, Napoleon in France, Franco in Spain, Mussolini in Italy etc. The UK is one of the very few which avoided having a dictator.
[Edit - I was kind of talking about the wrong thing - avoiding dictators rather than Trump types]