You can also grab the URL to any community or post on another instance, return to your own instance, and paste the URL into the search bar. If you’re the first person to ever search for that server it might not find anything at first, but it’ll fetch the data and probably work in a couple minutes.
In addition to what @Barbarian@lemmy.ml mentioned about changing the filter and searching, you can link it from your own instance like so:
https://lemmy.ml/c/gaming@beehaw.org
You can also grab the URL to any community or post on another instance, return to your own instance, and paste the URL into the search bar. If you’re the first person to ever search for that server it might not find anything at first, but it’ll fetch the data and probably work in a couple minutes.