Do let me temper that slightly :
Some states didn't or didn't fully have a paper trail quite yet https://ballotpedia.org/Voting_methods_and_equipment_by_stat...
Also, be aware that Dominion voting systems actually acquired the old "Diebold Election Systems", who were not so secure a couple of years back. (though things may have changed by now, of course) https://en.wikipedia.org/wiki/Premier_Election_Solutions
Since Trump won 7/8 of those states, a conspiracy theorist might suggest that Trump’s team successfully hacked the electronic machines in those states that have no paper trail.
However, there’s really very little reason to believe there was fraud in this election - but those republican states (and New Jersey) should replace their DREs without VVPAT by the next election so that they have a secure paper trail for auditing.
But hand-counting works because it's virtually impossible to coordinate fraud widespread enough to actually make a difference. Whereas, if your entire voting system is computerized and all the computers are linked together, causing widespread changes are much more possible.