Proving there is “no” evidence of voter fraud is discounted in every single election. Of course there is voter fraud. We know for a fact dead people voted for example. What you are trying to say is there is not enough of it to account for the difference. That is up for debate.
actually, there's no debate at all. There wasn't enough minor errors or outright fraud to overturn 11,000 votes in AZ, 14,000 votes in GA, 20,000 votes in WI, and 81,000 votes in PA, which is what you would need to do to overrule 6,200,000 more Americans who preferred Biden.
The only thing this election proves is why we need to get rid of the Electoral College, an undemocratic institution that is open to this kind of manipulation.