Again, just ask the obvious question. What did Biden do to apparently drive off Black voters? And why do those groups feel like they're worse off when that is objectively untrue?
Material conditions for all income groups are not objectively better.
I'll speak on my state specifically. More renters than ever before are cost burdened, pay more than 30% on rent with lower income groups paying 50% or more, and homelessness is on the rise. While inflation is cooling, everything is a higher price than it was. Historically low wages increasing by low double digits means little when folks weren't making enough to begin with. All around the major metros food bank demand keep increasing with some places seeing 25% increase.
So when folks says "But unemployment is low!" That means little to these folks who are struggling to get food on the table and pay rent or buy a house. So I can see why some folks are choosing the other option hoping for change. Rightfully or not.