Again, to bring back his confidence, he should fight b-level fighters knock them out. In that way, he can feel good about himself. The road might be long, but that's the only way he can bring back his mind to become a champion again.
Wilder is currently trying to recover his broken hands against fury a few days ago and in some media, wilder's coach said that if wilder is currently refusing to retire after breaking his hands and reportedly wilder will again target a comeback fight in May 2022 against Anthony Joshua, and of course if the fight can be realized of course he will be able to improve his career record after the defeat against fury.