The main cloud services don't even work natively (GoogleDrive, OneDrive, iCloud) basically the only mainstream choice is Dropbox. I tried to use Google Drive in Mint, and it's a pain to get it to work, and usually it stops working after computer restarts.
Someone has a recommendation about how to handle these services?
I had a problem with Mega using Fedora. Trying to update from Fedora 37 to 38, I had a dependency problem with the Megasync app. I tried uninstalling but the problem persisted and I couldn't upgrade, so I had to make a clean install.
Other than that, Mega and Syncthing worked perfect for me.