As evidenced by what? A pandemic that gripped the nation during one of our greatest economic booms ever?
Is the Department of State better or worse off than it was 4 years ago? Is US soft power stronger or weaker than it was 4 years ago?
The answer to all of these is pretty obvious, damning, and moving in the same direction.
Complete strawman, since you don't have an actual leg to stand on in defending this administration. Never did I say (nor would I) that Trump's "bad manners" had any affect.