Trump's opponents didn't seem to be suggesting noticeably better strategies to deal with the virus and Democrat led states don't seem to be handling the virus much better than Republican led states [2].
I prefer to focus on more concrete and demonstrable failures but I think in a few years when we can really parse this data we'll find that Trump's actions directly led to hundreds of thousands of avoidable deaths... but, I'm not certain.
The biggest failure I think we pretty clearly made in handling the virus was not quickly building up some nationalized vaccine production facilities. If ever there was a time for some good old state capitalism it was this pandemic and a few hundred million invested in setting up facilities we know we'll eventually need would have paid off handsomely.
Gibraltar
San Marino
Belgium
Czechia
Slovenia
UK
Italy
Portugal
Montenegro
(from https://www.worldometers.info/coronavirus/)And, do you really think that Belgium has all of whatever bad characteristics you like to apply to the US government? Or is it maybe more a consequence of being a small and densely populated area that people travel a lot to and from, like NYC? It's not as simple as good policy response meaning lower deaths.
The administration was overtly spreading misinformation and speaking against straight up correct medical advice. They made overt statements in national media that assistance vs the virus would be treated as a quid pro quo for political loyalty. They threatened governors that criticized the administration with denial of federal resources in a (&()^) epidemic. You cannot whitewash the blood on their hands.
It was craven politics born of an early idea that the virus would be worst in left leaning coastal cities, and hence would help Trump for re-election. Obviously a virus doesn't give a crap about political parties, so it didn't go that way.
It's entirely reasonable to believe that the number of covid deaths in the US would have been an order of magnitude less with more sober decision making.