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!

  • denemdenem@lemmy.worldOP
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    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 “!memes@lemmy.ml”, 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.