And the more he keeps failing, the more his support ebbs.  

Basically, I would ask where do you feel it is ebbing? The polling indicates that 82% of Republican voters still believe Trump won this election and the Biden win is a hoax. Not good. This is a case of mass insanity. Trump has no intention of letting this go nor going away after he is removed from the White House. He will up the ante then and he still has a firm hold on many of the corrupt elected Republicans. Trump is going to go to war with Mitch McConnell over who controls the party and many Trump supporters are sticking with Trump in this fight. This means Trump will go nuclear on any Republican that breaks ranks with him and they know it so many fear breaking from him even after he is no longer president. Trump will actively work with Putin and others to destroy the United States once he is out of the White House. This is going to be very dangerous.