The trade war is just the start
There have been a couple of hundred or so empires throughout history. It's a useful statistic to know, because all of them came to an end sooner or later. While past history is no prediction for the future, if 200 empires have collapsed, it is not unlikely that number 201 will do the same. No doubt each one thought it was unique. This is the same conceit that America has when it uses the word "exceptionalism" to describe itself.
We are in the latter stages of the American empire. The American empire was already building before WW2 and expanded very rapidly afterwards. The USA is now trying to prevent a competitor from rising. It has tried arguing, it has tried propaganda (the CIA has a program to insert pro-American stories in the "free" press throughout the world), it has tried restricting trade, it has tried sanctions. We know what comes next. It is trying to sow discord in China's neighbours.
But the USA will collapse by itself. It doesn't need a peer competitor. The thing that will destroy the USA is debt. Some lunatics think they can print money forever, that the economy will only grow, that the American "exceptionalism" will always prevail. Sooner or later the bill comes in. The party will come to an end and there will be a huge headache.
The sanctions that the USA already has in place against whoever it feels like, and so called secondary sanctions (AKA threats), have directly harmed other so-called allied countries' economies. We know what it is like to be in the American camp. Many countries, friendly towards the USA, are not following these sanctions with glee as it is harms them. These countries have no particular quarrel with America's "enemies".
The USA will not go down without a fight, and it will fight dirty. But it will go down like the other empires. It will remain powerful but not what it once was.