You could vote for reps that believe in universal healthcare or at least support ACA. Those reps will overwhelmingly be democrats. So vote D down the ballet.
Bernie favoured the radical overhaul it frankly needs. But if you can't get that, any progress is still progress.
https://stateofreform.com/news/california/2019/07/california...
Why expect more progress at the federal level?
Healthcare for the Democrats is like guns for Republicans. It's too useful as a wedge issue they can use to scare voters to the polls. They're more interested in yelling about what the other side will than passing the legislation they promise.