Germany has a dual system. one is gov care and the other is private. People choose accordingly. Private is better money and service for single people, punlic is generally better for large families. Notwithstanding America should not have such socialism, that demand of single payer is ridiculously asking for skyrocketing health care costs.
On the German health care topic....if you make under X-amount a year (I think it’s near 50,000 Euro), then you have no choice, it’ll be public (mandatory) insurance. What you get is simple three-star affordable healthcare. Rehab for physical injuries is hit and miss....the best drugs won’t be prescribed under their cheaper drug plan, but you can buy them via cash yourself....and hospital situation may require you to be in a two, or four, or six-person room (depending on the hospital).