It is true the US is now facing the consequences of policies enacted by previous administrations not only Trump's but that of Biden, Obama, Clinton and Bush. All have left problems unsolved and created many more on their own.
Debt grew exponentially but still over many years. Donald Trump should not be blamed for all the problems.
Cutting costs is part of a restructuring program for restoring solvency. The problem is that when applied to nations, people assumes the sacrifices are run by the public forgetting austerity and frugality can lead to a greater good.
If government spending is not controlled, people of all classes will be forced to pay more taxes to back their currencies (solvency of treasuries like the FED) or face rampant inflation.
The medicine is bitter every passing day if the symptoms are ignored or the illness untreated. Right or wrong, at least he is trying to do something about it.