Not sure if you mean without alcohol as in without you yourself needing to drink, or if you mean where do you find an entire community who doesn't drink.

If you're looking for athiest teetotallers, you're already cutting out more than three quarters of people you'll ever meet, so no wonder you may be finding it hard.

If you're anywhere slightly populated, check out local festivals and street markets that get stood up on a regular schedule. Where I am there's usually a weekly farmer's market in a few cities nearby. If you want to volunteer to set-up or work at one they always have the most friendly, community-based people. You'll have to not be anti-social for long enough to make friends with people, but normally it will be the same group who goes to every street festival and market, and you'll recognize all the vendors and workers (who are chill people).