Update: Detractors such as Reuters fail to prove the claims are false. They merely try to explain away the evidence presented.
After the 2020 election, Trump advisor Peter Navarro reviewed the election and determined the vast amount of election irregularities amounted to election fraud and put out his report on his site (https://peternavarro.com/category/the-navarro-report/).
You would think people would want to review the allegations considering how far so many states went to change election laws and processes due to COVID, but no. Unfortunately, most people take the allegations as “sour grapes” or “sore loser” over a “lost” election. The rapid refusal to address the allegations, including the refusal of the courts, have only deepened the doubt over US elections. However, there are books on what is wrong with our election processes including mail-in ballots (https://www.thriftbooks.com/w/our-broken-elections-how-the-left-changed-the-way-you-vote/28636976). Election integrity as an issue has continued to grow ever since the highly contested presidential election of 2,000 between Bush and Gore.
Matters were not helped when Sydney Powell and Mike Lindell who launched into allegations against software and computers. While possible, it is highly improbable due to the high skill set required to pull off such fraud. However, for transparency, black box technology should not be used and there are irregularities which need to be reviewed.
In steps the organization True the Vote (https://www.truethevote.org/) with actual data showing what transpired with mailed-in ballots. People were found to have visit numerous ballot drop boxes and dropping off multiple ballots. Dinesh D’Souza picks it up and makes the movie 2000 Mules and now has a book out with more details (https://www.regnery.com/9781684514465/2000-mules/ ). Mail-in ballots have always posed a risk which is why most countries ban it or restrict it (https://en.wikipedia.org/wiki/Postal_voting). The evidence is there and investigation should take place.
There are Republicans and conservatives who continue to stick their head in the sand or put their fingers in their ears saying “LALALA! LALALALA! LALALALA! I can’[t hear you!”. However, Secretary of State Bob Evnen could not obtain 50 percent of the vote in the Republican primary. Sorry, this issue is not going away any time soon.