Just had a thought that I've co opted from the Internet.
IMO the reason that Trump did better than expected in some areas is down to two things:
1. We're at the point with COVID that people are sick of hearing about it and just want to keep their normal lives going. So while Trump has completely bungled the response, we're passed the initial "freaking out" phase and the public absolutely knows that there won't be another lockdown with Trump. So they voted for him.
2. The other big story, George Floyd and the protests after, allowed Trump to play himself as a law and order President. Someone who will back the police, because they protect the normal people. While the Democrat messaging optics was Police Reform, Police Defunding, etc... One of the Eastman attack ads was basically saying Democrats will allow violent protesters out of prison for no reason other than that they're protesting.
Bottom line, though, is that there is a lot of misinformation presented as fact on the Internet.