That and I'm not just talking about rural areas. There are dozens of medium sized cities with fairly affordable housing, especially in the Midwest. Texas isn't bad either if you stay away from tech exodus hotspots and trendy/posh areas.
Try just doing a nationwide job search with salaries adjusted for housing cost.
It also limits your mobility dramatically. By working in a HCOL city, even if I'm struggling to save, I'm maxing out my 401(k) plus match and more every year. If I want, I can do that for a while and then move to somewhere cheaper. My family in the midwest, despite saving enough for an incredibly comfortable retirement there, couldn't purchase a home anywhere within 1.5 hours of Seattle if they wanted to move there now.
Medium sized would be places like Indianapolis, Columbus, Cincinnati, Pittsburgh, Orlando, Phoenix, etc. Austin used to be high on that list before it got inflated.
You also have to be a specific kind of person (like me) that wants to do outdoorsy things to live outside the major cities.
As for starting your own business, why not? There's plenty of demand for welding services right now.
Young people should leave high cost of living cities. Housing is still affordable across most of the US.
The opportunities these cities once held have been destroyed by real estate hyperinflation.