The reason Trump can act recklessly is precisely because he has strength to rely on.
First, economic interests; the U.S. market is large enough, and more importantly: the consumer capacity is very strong;
Second, security interests; many countries' security interests need the U.S. to maintain, which seems to be more important than economic interests.
These factors are not only Trump's confidence but also the Achilles' heel of many countries.
Therefore, under this influence, it is very difficult for the whole world to unite against the U.S.
At the same time, countries have ulterior motives, and not to mention security interests; in terms of economic interests, they may see quite clearly that as long as some countries' products exit the U.S. market, they have the opportunity to fill in and gain a larger market share.
So, the reality is harsh, and there is no need to expect anything.
There is no denying that if you offer them more economic benefits than the U.S. but cannot provide them with better security guarantees, why would they turn to you to confront the U.S.?
Thus, recognizing the situation, giving up illusions, and relying on one's own efforts and advantages to confront the U.S. is the best choice.