Arthur, when they stopped counting in the middle of the night, it was clear there was monkey business going on.
Well, no, not really. Multiple investigations and audits later verified what most already knew. This whole thing effectively stemmed from Trump himself on election night. He gave a monumentally ill advised victory speech just a few hours after the initial votes had come in. Now he must have surely been aware of what major news outlets were already reporting - that his initial lead wasn't going to last long because the mail in ballots were going to be predominantly in favour of Biden. Sure enough, that's what happened and can't have been breaking news for anyone keeping up to speed with events.
He was never going to go gracefully from that point. Trump is too much of an egotist to do that so what other recourse for him but to claim fraud? His fan base would be on board with that, especially the hardcore supporters and so then we have Powell's kraken, Giuliani & Lindell, Qanon and all of it's only resulted in embarrassment for republicans along with lawsuits for those accusing vote machine manufacturers with tampering, all of which unsubstantiated. It's no wonder that many republicans are fed up with it all as they know how bad it makes them look, all because Trump couldn't relinquish office with any dignity.
There was always going to be a higher voter turnout the last election than in 2016. Trump has been one of the most divisive presidents in history but there was nothing credible to suggest widespread voter fraud as all of these audits etc have confirmed. Trump is simply the sorest of losers as demonstrated with his phone call to Raffensberger pleading for him to find him another 11,000 votes.
Were there instances of fraud? Probably. Realistically, there's probably cases of fraud in any election but nothing to suggest the claims made.
FTR, if Clinton had pulled this stunt in 2016 I'd say the same about her and she's no great shakes, in fact America was royally short changed with it's choice of primary candidates. Biden's hardly doing a stellar job as president either so this isn't simply about bashing Trump.