I just installed #Manuskript on my new Librem Mini.
https://www.theologeek.ch/manuskript/
This is a great tool for writers, with many similarities to #Scrivener. It is not quite as polished, but is free software, and is compatible with Linux (as well as Mac and Windows).
It really helps to design stories using the Snowflake Method. You separate your story into scenes, have a timeline feature available, character editing, scene editing, and more.