If he had any sense at all, he would have bailed after losing Iowa. That way he could keep laundering money for the Russians and talk about how he would have been the best president ever.
Trump could resign now, and walk away with a shred of dignity and even some sympathy owing to his Covid diagnosis, Or he could barrel ahead with his telegraphed plans to contest a (likely) blowout election against him by means of vigilante poll-watchers, Proud Boys, and a Supreme Court stacked in his favor.