Jimmy Dore, Tim Pool, and hundreds of others on the left have explained so well what was happening and is still happening. People who talk to people, not people who sit in high rises offices in major expensive cities and listen to themselves on Twitter all day which is a fraction, of a fraction of the population (majority of people don't even have time to tweet or care if they did, the loudest voices there are not representative of political thought for the majority of Americans). DNC has doubled down and moved further in the direction that lost them the last one. People have missed that Republicans have moved left or more center cause of Trump, gay marriage is something Trump doesn't care about at worst and supports at best, same thing on marijuana legalization. People who voted for Obama voted for Trump, the Christian right vote for Trump or don't vote at all because who else are they going to vote for.
In my state, NAFTA fucked over a lot of people, people working factory jobs are now working two jobs, Clinton's brought that into reality, and she still advocated for that and other trade deals like TPP. Bernie might have had a chance then, because he stood against it, he's since said things like "white people don't know what its like to be poor", turning it into a race issue instead of a class issue, stopped talking about worker rights, he sure doesn't now, even without the DNC's help, people watched how the DNC played Bernie and rigged things against him, changed the rules and sacrificed their morals to let billionaire in and keep saying anyone they don't like, even on their own side, is a Russian asset, they know they're just as dishonest. They see rich white people at the top of the DNC, the people the DNC says we're supposed to hate, and recognize the sheer hypocrisy of it all. In the last 4 years they've sinked to Trump's level, and got down in the mud with him.