I cut everybody some slack as this was a virus like no other and it did take a LOT of trial and error to learn how to best manage it. Not even Fauci knew how to do that.
I am not excusing Fauci's lies and disinformation just to cover his butt at all though. The honorable thing to do would be to say okay, we tried that and we were wrong. He didn't seem to have the character to do that. And there is no excuse for perpetuating useless or even harmful policies once we know they are ineffective or harmful.
One of President Trump's policies early on, and that applied to COVID as well, is the 'right to try' something different and unconventional when the conventional isn't working. He was a trial and error leader willing to risk failure in order to find the best solution for a problem. That is one of many things that set him apart from politicians who are terrified of failing at something and won't even try as a result.