Try Obtanium! You'll also get updates ahead of F-Droid.

I suggest mega.io as replacement for OneDrive. I use it myself, and it has a desktop app like OneDrive's.

I write for myself, not others. I try not to worry about what others might think when they read my story. I try not to care about any typos and grammatical errors and misused words. Those worries are for when I'm editing my draft. I also remind myself that no story starts great, it doesn't matter if your draft is terrible. You just need to write something. You can improve what you wrote later, but you do need some kind of foundation to build upon.