You can long tap on the username of the thread you want to hide. It was not the most intuitive thing for me but I found it accidentally and maybe I can save you from the searching!

    • @denemdenemOP
      4•1 year ago

      Copied from another explanation: >use your search feature on your main instance and enter !{community_name}@{instance_url} then you can subscribe

      So for example if you want to sub to the memes community in lemmy.ml then go to Search, type in “[email protected]”, under Search change the dropdown from Communities to All (important step), then you should see the community which you can subscribe and post to.

      Edit: added image for better understanding.