How dangerous would another four-year term Trump be for the US?

That old warhorse John Bolton has been giving interviews all over the place to promote his memoir and to put his former boss in the worst possible light. The former national security adviser is doing his best to scupper Trump's chances of being reelected in November by telling everyone that another four years of this man would be seriously dangerous for the United States and, presumably, for the world. Basically he seems to be sayng: "You've seen what he's like in his first four years, but you ain't seen nothing yet if you give him another four years." Well I knnw this is a common theme among Trump critics who believe that he could damage the republic for ever. But the beauty of a democracy as opposed to a dictatorship like in China, Russia and Venezuela, is that a president who goes out to damage the country for whatever reason can be stopped. America is a fine democracy and Congress is not like the Russian Duma or the Chinese Communist Party, rubber-stamping whatever the president wants. Bad US presidents, wicked US presidents, are brought down. Richard Nixon broke the law and was forced to resign. If Trump wins the November election, he will spend much of his four years trying to build a legacy for himself. He will want to be heralded as the greatest president in the history of the United States. And for that reason, and that reason alone, I don't think a second-term Trump would be the dangerman that Bolton warns about. Trump will be desperate for praise, so for a start he won't want to go to war - he has avoided that so far in his first term. He will want the economy to be booming and he will want THAT wall finished. That will be enough for him. With those three things under his belt he will feel sure the American people will praise him and thank him. So I think Bolton is just stirring it up. The legacy thing will be so imortant to Trump that he will hardly dare do anything outrageous. Fingers crossed anyway if Biden does fail to beat Trump in November.