This is not a political statement, but an attempt to look factually on what has happened and what is happening.
I believe the only thing that would have reduced the total number of cases in the U.S. would have been to restrict foreign travel extensively much earlier. I don't remember a whole lot of support for that from any side. In conjunction with that, 2 other things would have had to happen, inter-state travel would have had to be greatly reduced (good luck doing that constitutionally), and the cities and states would have had to shut down much earlier. Remember the mayor of NY was promoting people to get out and enjoy life and go to restaurants in almost mid-March, and Biden was holding large rallies. NY state was not shut down till March 22. By then it was too late, too many infected in NY, and those people had spread it around the country and vice-versa.
I am not saying the federal response post mid-March response has been coherent, but, I don't think the outcome, overall, would have been much different with a different government as there was no willpower early enough on either side to do what was needed.
Singapore is a great example of how hard this is to control once it is out in the wild. Single city-state, significant contract tracing, and isolation measures, but like Sweden, never shut down. It worked great for them, initially, until everyone returned from abroad and the system could no longer keep up. High population density now works against them, and they have now 26,000 cases, though they claim very few deaths, which seems suspect, though they really did not start till mid-late April.