If there are any astonomy clubs in your town they’ll tell you what dark sites are best near you.

I sadly don’t, but you can check out this. Gladly, I’m at the edge of a dark-yellow zone, next to a green one, meaning it’s pretty good. The difference, just 500 or 1000 meters away compared to the mid city, is actually super noticeable even with the naked eye. Maybe consider checking out the map and look for less polluted areas, e.g. a forest or big field :)