

What software do you use for RPG campaigns? Is it just PDFs and word processors, or do you use a an online VTT? It should mostly be fine, but I figured I should ask.
Also, what are you doing in terms of the Minecraft Server? While I think most support Linux, there could (not certainly are) be weird caveats depending on the server.
This just seems to be the web app in weird packaging, and you would get very little benefit installing it.
Personally, I use an iPhone, and I just resort to the web app, and I can live with it. Not as fancy as on the Mac, but I manage. I’m able to access my Apple e-mails and photos just fine. I eventually just plan to jump the Apple ship, but like you, that’s not possible for me at the moment.
As others have said, rclone might work for you, but I personally don’t use iCloud Drive, so I don’t know enough to speak about it.