While I agree with you on this bleak outcome, it's more that it's a progressive vs conservative issue. Progressives make up a minority of the democrat party and 0 of the republican party.
The only way to really change this is voting for progressives when possible, though it's hard to convince others that this is what you need to do.
If you are in a blue state, vote in the primaries for the progressive candidates. If you are in red states, that's voting for democrats in general and the most centrist republicans in the primary.
The absolute worst thing to do is to not vote and let the most conservative candidates run wild.
This is not a D vs R / lib vs con issue. It is not a progressive vs centrist Democrat issue either. It's a healthcare industrial complex issue. The US spends 16.6% of GDP on healthcare. The OECD average is 9.7%. (https://stats.oecd.org/Index.aspx?DataSetCode=SHA). That 6.9% difference is $1.5 trillion! That's 2x defense spending!
That 6.9% of GP is supporting millions of jobs, and to remove an inefficiency like that would put them all out of work. It is not possible to do that in a democracy.
The only way to really change this is voting for progressives when possible, though it's hard to convince others that this is what you need to do.
If you are in a blue state, vote in the primaries for the progressive candidates. If you are in red states, that's voting for democrats in general and the most centrist republicans in the primary.
The absolute worst thing to do is to not vote and let the most conservative candidates run wild.