Bernie would have lost this election against Trump, no doubt about it. America spoke in the primaries for the democrats and left and America spoke loudly in the general election.
You will get what you want, a moral choice will give you single payer healthcare and the other things you seek. Forget ideology and focus on moral behavior and the right things will be done. I mean actual moral behavior and beliefs, not a hypocritical public show of "finding Jesus". A simple guide is putting others and larger things first and yourself second, this is the core of morality, others first, country first as some say.