Another deception carefully perpetuated in the media. Not all relevant election irregularities are tantamount to fraud, but that doesn't make them any less significant or meaningful.
A simple example. If a ballot tabulator were operated incorrectly, albeit innocently, such that ballots were double counted, that would not constitute election fraud but would justify a decision not to certify the count and to recount all ballots by hand. Most of the irregularities that have been alleged fall in this category. All of the signature verification issues fall into this category. Depending on the state, election workers were either instructed that signature verification on mail-in ballots was not required, or could be cured, or in some cases it may have been omitted innocently.
There are also allegations of fraudulent conduct, but the media is deceiving the public to believe that only fraudulent conduct matters. In the vast majority of cases where fraudulent conduct has been alleged, Trump (or allied) counsel have not retreated from those allegations. Rather, in most (if not all) of those cases, the courts have said that the evidence of fraud offered did not meet the very high standards required for emergency pre-trial relief, or have dismissed the claims on technical grounds (laches, standing, etc.)