Here is the thing, what you cite here as "Good Arguments" are factually wrong.
The wall: He tried consistently throughout the first 3 years. Congress initially refused to pass funding, then individual states, organization, and people sued him over it, consistently getting stays of action from the courts. The reason he has only been able to start now is because those stops which were out of his control have finally failed and slowed down. So that there is simply not his fault.
Not Helping Gun grabbing: I can give you the stupid stock ban, but beyond that... what do you expect him to do as the Executive? This is largely a Legislative issue, the executive can huff and puff but it'd be pointless. It also would be spending political capital he simply doesn't have enough of to use around freely. The only thing he really can do is continue to get judges that will counteract it.
Handling The Virus: Name one thing he could realistically have done or do better? Whether you think this disease is Armageddon or less serious than the common cold, the fact is it was lied about by the chinese, he attempted to block travel early despite having very, VERY little political capital because of a sham impeachment, and the data on the disease was frantic and confusing even for the expert. At least from my point of view, while there is plenty he might have done differently, none of it is a realistic expectation because of the data we had at the time. Hindsight is 20/20, and in this case its hindsight by information only known well after the fact.
My own issues with the man mainly stem from me just disliking him as a person. But that doesn't mean he is bad at his job, just that he is a bit of a dick.