Even when you hear complaints about things like healthcare, the debates are more about universal coverage than the quality or affordability of care itself. Americans are overwhelmingly satisfied with their own healthcare: https://news.gallup.com/poll/245195/americans-rate-healthcar.... (And, Americans being preternaturally optimistic, just assign less value to the security of a safety net in the case they lose their job, etc.)
Americans live in houses far larger than the average European: https://www.reddit.com/r/dataisbeautiful/comments/7ei5f4/com.... We have more TVs, more cars, etc.
It’s easy to assume that Americans are just ignorant and irrational. But Americans know that Europe has a bunch of services we don’t, and they pay much higher taxes in return. Democrats make that comparison all the time. People are aware of it. But the fact is that the current system works pretty well for your typical voter. A flatter society with more social services would be better for a lot of people. However, your average suburban married couple would take a significant hit to their standard of living if they lived in France instead.