If nothing pops up when you search for it, you can always create it yourself :P

Edit:

Here’s the top 3 I found by searching “writing”:

https://lemmy.world/c/keepwriting

https://lemmy.world/c/writingprompts

https://beehaw.org/c/writing

Edit: just read the description again and realized it might not be what you meant

There are several Writing and WritingPrompt communities on several servers. I can’t speak to how active they are.

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