Here's another source for the Republicans winning a contingent election
https://theconversation.com/congress-could-select-the-president-in-a-disputed-election-149580
I still think if the Republicans keep their nerve they can go through the recount process. If that runs out of time trying to undo the numerous issues with the ballot have the state legislatures nominate electors.
If none of that gives them 270 votes but doesn't give it to the Democrats either they'll win by contingent election.
People, particularly Brits, unfortunately, often mock Americans for their 'He who has the biggest balls wins and stays free' attitude but in this case it's absolutely the way to go. The media will whinge and gaslight and AntiFa and BLM will be reactivated to riot but if the Republican party keeps its nerve it can keep the White House and clean up places like PA just like it cleaned up Florida post-2000. And I think this time it will do so with popular approval no matter how much the media claim the contrary.
I'm biased because while I don't trust top-level politicians like Trump or Biden or even most of the House or Senate of either party I've met Democrats and Republicans and I strongly prefer the latter. Republicans remind me of the Brits I know who voted for Brexit and while Trump is not the ideal representative for them in my limey faggot opinion, he's the only one they've got right now, Dark Knight style.