Agreed with the above: Adam4Adam, Squirt. Bateworld has some chat groups where meetups are organized too.
It used to be you could find these mentioned on Craigslist, but fuck the US Congress for screwing that up. :-(
Look around on the apps regularly; you'll sometimes see folks organizing meetups. You can also mention that you're looking for that on your app profile and folks will sometimes message you about it. Look in some of the niche groups, even if you're not into those... swingers groups, BDSM groups, etc., because sometimes the folks who organize those will be aware of similar organizers in that space that might be more aligned with your interests. In SF, for example, the same folks who organize some swingers events also organize some gay, leather, and BDSM events as well... once you connect with them, you can sign up for their other email lists.
Finally, look for sexual minority resources in your area; sometimes they can connect you with sex-positive event organizers like nudism/naturist groups... those folks often know the more sexy events as well. Just be chill when contacting them. They may think you're genuinely interested in their activities/events and if you're all "just point me to the fuckin'!" they may not be inclined to help. Show interest, be friendly and warm, and not only might you find a cool group and make new non-sexual friends, they may spill all their secrets.
