Have you ever received health-care in Europe? I have, Italy. It takes a painfully long time to get an appointment and the quality of care is not close to on par with that received in the US unless you opt for private care anyway.
I have had excellent service here in Norway and even in these times of COVID I have not had to wait unreasonably long for appointments for things like MRI and my GP seems to have less to do now than in normal times, far fewer respiratory conditions to deal with.
As with any other large system there will be some variation in quality and availability even within the same country as my wife discovered giving birth in two different hospitals in the UK, one merely good enough, the other excellent.
And I have NEVER had anything to complain about. Neither has my family, or anyone I know. The quality is top notch, and getting an appointment is as easy for me as picking up the phone.
And btw. if anyone is unhappy with what public health care provides, its easy to get private insurance ON TOP OF it. Public health care doesn't replace private insurance, it sets a baseline of quality people receive no matter what.
And speaking of quality: https://www.healthsystemtracker.org/chart-collection/quality...
Have you ever received health-care in Australia, its pretty good and free.