You do a LOT of "guess work" to try and maintain a shred of validity to your claim.
FACTS are not "guess work".
Once more for the cheap seats: if you have 245 million eligible voters, but only 90 million vote, then that's a LOW VOTER TURN OUT. If you want to dance about registered vs. non-registered, take note:
www.worldpopulationreview.com/state-rankings/registered-voters-by-party
No matter how you slice it or whom you blame, the voter turnout was relatively low. And traditionally, the GOP does well with low voter turnout (a matter of fact, a matter of history that's easily verified).
Now I whole heartedly agree with you about the Biden/Harris fiasco. Uncle Joe should have NEVER opted to run for second term, as it was clear he was beginning to erode mentally. And Harris kissing up to corp donors and the likes of Cheney didn't help matters.
Oh well, you got what you wished for. I'll just sit back and watch you twist like a pretzel when you realize you've slit your own throat as a Constitutional, democratic republic loving American.
Pray 2026 at least puts a speed bump on the christo-fascist era of Cheeto Jeezus & company.