You can't just ascribe this to just voter fraud. Now, I'm not saying that there weren't failures sporadically here and there, and I support recounting and full transparency.
But that is not why Trump lost. We knew that there was support for Biden. Biden still has the trailing stink of the Obama love affair from the left. Biden is a recognizable name and people feel they know what they are getting.
Trump won in 2016 by picking up states in the rust belt, which traditional are Dem, but snubbed Hillary. But those states didn't magically turn republican overnight. Sleepy Joe simply got them out to vote which Hillary couldn't.
That and Arizona turning blue is what sealed the deal.
People have been saying that Trump is teflon and people don't care what he does, but in fact we saw the same thing with Sleepy Joe. People completely didn't care about his corruption, about how he is going senile, about how he is not pro law and order, or how he is surrounded by commies. People simply didn't care, they simply voted along party lines.