Are libs of US that naive/insane to blindly follow him? I observed that good number democrats(supporter’s) acknowledge that Kamala is not the perfect solution. Are libs truly that naive/insane?

Completly out of context, but I want to ask an important question

I am from India, currently studying in Australia and back home I was actively involved in politics. Being involved in politics means I have to give a damn about the US, and for the first time in my life I happened to watch the presidental debate. Ever since, I have been wondering how Trump has so much following and how was he a president of your country? Not a single statement of his made sense, and not to mention how he always deviated from the topic being discussed. Can someone please explain what is happening in the US?