There aren’t any breweries in RI that make nonalcoholic beers so far as I know. From what I understand they’re quite hard to make.

Origin Beer Project is likely you’re best bet for low ABV beers. Looks like they have 2 available right now at 4.0% or less.

As others have mentioned, more and more bars are carrying good NA beers now. I’ve tried a ton of them, and Athletic is my favorite. They’re definitely #1 for NA IPAs for me. If you’re into Guinness, their 0 beer is very close to the original.