I don't need to prove anything to you. You actually are the one who needs to prove the claims you are making, along with the other claimants.
So far, nothing has been proven anywhere. In any locale.
Let's do this. If Republicans are so eager to disenfranchise so many voters in an election that wasn't very close, shall we also:
1) Revisit the 2016 election and the 80,000 TOTAL vote disparity we saw in three states that favored Trump? Shall we impound all of the relevant electoral machines, ballots, and documentation and see if there was fraud?
2) Throw out all the down ballot victories your side won? In the jurisdictions Republicans are whining about, Republicans won very many close elections. Those need to get thrown out, too. If the Presidential election was a fraud, so were they.
The votes were counted fairly and transparently, just like they have been in past elections.
Trump has filed more than 50 cases in an attempt to overturn various results. He's been turned away in all but one, and in that one, the votes in question were never counted anyway, so it had no impact.
The burden of proof is always in court, not some goofy dude with mascara running down his cheek screaming, "FRAUD!!"
Rudy yells fraud, then offers no evidence in court, where these matters are decided.
This election has proven the opposite of what you claim. It's decentralized nature, something Republicans love when it suits them, has proven to be almost impossible to hack.
Just accept the results like an adult.