Give specifics.
It was known from the start that the elderly were the most vulnerable population group. Nursing homes should have been immediately isolated and staffs should have been awarded triple-pay to live on-site... FEMA trailers if necessary. No visitors. Trump shares some of the blame for the lack of a response to address the massive death toll among the elderly. BTW, this would have been far cheaper than pumping several trillion dollars into the economy to support the mindless lockdowns.
Schools were probably always going to have been the purview of the governors, but Trump could have taken stronger public positions to keep public schools open.
Vaccines, as we are finding out, were baked into the cake. They’d been planning a massive vaccine plan since Sars-Covid-1 and MERS. It was planned & war gamed. I don’t really have any gripes about how Trump handled this, but he needs to be backing away from claiming credit as public opinion of the vaccines is flipping toward ‘against’.