Biden managed a win against Trump and while Clinton lost the electoral college she did win the popular vote… Harris did neither.

Neoliberal politics that constantly squeeze the working class to steal wealth for the rich have led to a lot of discontent - people wrongly assume Trump will fix that while Harris’ campaign was basically just “We’re going to neoliberal so hard your neoliberalism is going to have neoliberalism in its neoliberalism.”

That was just a losing strategy and failed to capture votes like Biden or Obama the latter of which literally ran on “hope and change”.