You do know that Dr Azz won the vote on election day?
You do know that Mastriano got more votes for governor than any previous GOP candidate (win or lose)?
The problem was not turnout. The problem was ballot harvesting by the left and Trump's lack of leadership in fighting it.
Gee,no kidding...
You are aware that ballot harvesting, ubiquitous mail-in voting ballots and voting machine are a state problem. Specifically, a state legislature problem, a President has very little direct control. He can use the Presidency as a bully pulpit to get them to change things. I grant you Trump did a poor job communicating that concern prior to 2020. It was evident there were “problems” in 2016 & 2018. He set up a “commission” which got “push back”. Trump and “the commission” didn’t “push back harder” and it fizzled out. I think he just lost interest because it never occurred to him that it could be done to such an extent he would lose. (Ego??) When he did sound off on it “He was losing 2020!”. It was too late then.