I had private insurance in Germany. The big difference is that they have to compete there instead of having a captive audience they have in the US with employer based health insurance. Your employer picks the insurance options that are convenient for them, they don't care much about what's good for you. So you are basically trapped unless you are willing to not take insurance from your employer but go on the open market which will be very expensive.
A while ago I asked my employer to just give me the money they give to Optum so I can buy insurance via ACA but they wouldn't do it.