Ready to actually start. Best places to start for out of town only

My husband and I are both in the right mindset that we are open to considering trying things out in real life. We have decided we’d prefer to do it while traveling at first.

What are the best places, apps, websites for finding thirds in locations you don’t reside in?

Any tips or what outs from others who started with this kind of approach?

Any advice is much appreciated. Thanks!