A systemic problem needs a systemic solution. Not just a focus on livable spaces, but a serious __political__ reform and an approach that has the big picture in mind.
The American Dream cannot survive when it's foundation has become a land-lord rent-seeking, do no actual work, income source that is predicated on renting the basic needs of life to those less well off.
Historians might well compare at least the roots of some of the protests in recent years not just to civil rights and persecution about race (which is an easy thing to point to as a root cause) but also about classist divides between the wealthy rent-seekers, and those who are forced to rent.
But I do want to mention you can have a huge house with a backyard and garage. In fact the suburbs can be retrofitted to be more walkable - you just need businesses and such there.
It’ll take a while but you can see the fragility of the car-only infrastructure coming to bear. Eventually it’ll just cost so much money to drive everywhere you’ll be begging to walk.
They wouldn't be expensive if the demand wasn't so high.
If it comes down to a choice between the dense, walkable cities of Europe and Asia, or the car-dominated suburban hellscape that is most of America, the vast majority of Americans are going to choose the latter.
IMO, if you really want to live in a walkable city, the thing to do is simply move to one, rather than sitting around hoping the rest of Americans are going to change their opinions and their culture. This is most likely going to mean leaving America. It's exactly what I did, and walkability was one of the big reasons.