Biden should attack the republicans and their way of doing things. Republicans are terrible, unpopular, and like roaches a few will stick around even after the the whole government gets a thorough hosing out and fumigation to remove their corruption and nastiness.
The wrongness of republicanism and how it leads to DeSantis, Kemp, Jordan, Graham, and McConnell, who are only more mildly wrong iterations of the damn trump himself, is where Biden should lay his marker. He will have to battle a cadre of the grasping misanthropic fools to revive the United States after the senseless abuse under the puppet imposter regime.