I doubt US and China will go to war. They are allies and contribute to each other's wellbeing.
Trump, on the other hand, doesn't seem to understand that.
If enough Americans believe what Trump says about China, China could be made into an enemy artifically.
It's hard to say. I don't keep up with the news much, and all you hear in the news are things taken out of context and intensified. There's probably a rational and calm side to America that we aren't seeing.
However, the right and left are quite polarized.
Due to the ridiculous Marxist identity politics of the left, and the alt-right's response to that identity politics with white supremacy and MGTOW (basically fascism), it wouldn't be surprising to see some kind of a civil war. Fascism and Communism are enemies, but they are two sides of the same coin: authoritarianism. Where there is authoritarianism there is force. And where there is force, there is violence.
And to make things worse, COVID-19 has put pressure on everyone by sabotaging our economy and social fabric and cohesion. A natural response to this decay would be anger and violence, such as the riots we see from BLM.
I have a feeling that there is no turning back. Things are crumbling and something else will have to take its place, and America is divided about what will take this place. Not to sound all prophetic, but we are witnessing a clear shift in the times, as astrology has predicted. Whatever comes next is going to be the thing for the next 5000 years. It's almost as dramatic as the agricultural revolution.
I just hope the rational individuals, like myself, that just want to be left alone, can salvage something decent out the rubble.