Your description sounds the exact opposite of suburb to my experience.
A suburb area is optimal for young kids as they can go everywhere. Parks, playgrounds, forest trails, movie theaters, everything is within a 10 minute walk or 3-5 minute bike ride. That's what the suburb experience means to me and the life we live right now.
In a city (SF/NYC) I couldn't possibly let my <10yr old go anywhere without extreme supervision given the crime, drugs, abusive cops, prostitution, crazy homeless, etc in every corner.
We can walk to many things. We are still considered suburban.
Further out and walking to shops is less plausible. But then you have lots of nature to wak around
Technically this is policy and not law but you could rack up huge fines if you do not supervise your kids. Often times parents trade off and coordinate but it’s still a hassle.
Many HOAs have rules that require children under the age of 13 to be supervised by an adult when outside the home.
Not remotely the case in the US. There can be common-area usage restrictions (e.g. pool and spa), but they can't constrain anything done off property.