Do you live near a city? Because pretty much every major city has a few. KEXP, WPFW, WUSC, KNHC are all local stations playing interesting non top 40 music that have been operating for decades in places that I have lived. Dublab & The Lot radio are also really good over the internet.
If there are non around you just pick a random place in the world here and listen: https://radio.garden
It's certainly 100x better than corporate and/or AI slop streams
if you really can't recieve one at all in your area, which seems unlikely, then maybe you should start one? do it for an hour or so each evening. A great hobby, and cheaper than you might think. Just be sure to get the certifications first.
Where abouts do you live? There's usually some sort of community radio station that plays music. Or there's a large gap in the band for a community radio station to fill...