How are you finding communities to subscribe to?
I've been going to different servers and finding communities to subscribe to. But that's quite slow if I'm looking for something specific and don't know what server it's on. Also quite a few duplicates.
Communities > All > Search. Or the New Communities community here.
This community browser is pretty helpful. You'll just need to search for the community within your own instance to subscribe, but I think you probably already figured that part out since you're here.