> Most of our public spaces prioritize cars instead of people.
Maybe most but there's plenty of public space that doesn't. People choose to live around the public spaces that do. Some even try to change that instead of moving somewhere that doesn't. The great thing about America is that there's plenty of everything for everyone, but it's not just going to come to you.
That's factually incorrect. Most of America has outlawed proper mixed-use zoning, which means those nice walkable neighborhoods are literally illegal to build.
Even if you don't want to live in a detached home deep in suburbia, there often isn't an affordable alternative.
There really aren't all that many options for people-centric urban spaces in the US. A handful of small districts in various cities, but nothing approaching the scale of such things in the thriving Spanish cities.
There's plenty of everything, as long as all you want is cars.