I haven’t figured this out either, there might not be a way to do it at all within the app. Hopefully that will come in a new update because it’s really annoying when I see a link for a community I want to subscribe to and I just want to stay in the app!
Urban exploring (for lack of a better term) with no purpose other than to discover. I live in a city and I’m constantly just wandering around going down streets I’ve never been down or into alleys I’ve never been in or checking out stores I’ve never been to. This is my approach when I travel to other cities and other countries too, I often don’t have a plan for my trip/vacation, I just arrive there and then start to wander and see what I find.