"It's a matter of creating a sound plan" is not the trivial thing you make it out to be without having a broad mandate about healthcare. You sound like the typical person who has never run for political office, but somehow thinks that they would totally fix the system if they were in charge.
Governments are an efficient market of sorts. Affecting the market needs either broad changes in society's point of view, or catastrophic events. It's indicative of the magnitude of conservative thought in American society that even the worst pandemic in US history did not result in a bipartisan push towards socialized healthcare.
For what it's worth – I agree with you about healthcare being a human right, but I'm not the person you need to convince. It's the people in your nearest conservative-leaning district who tend to treat healthcare more like going to the car dealership.