> Hillary lost [in 2016] because the Dems cheated Bernie

No, Hillary Clinton had around thirty years of scandals behind her by that point. And everyone who was over 35 at that time could remember at least one of them. She's always been a "rules apply to thee, not to me" kind of person. That's why she lost.

As for Bernie Sanders, in a party that relies upon ethnic minorities in urban areas for much of its electability, Sanders had essentially no appeal among those groups and still doesn't (as 2020 proved).