Back when I was using Plasma, I used megasync. But then I switched to Gnome Shell and megasync interface was bad integrated.
I didn’t want to install the extension to support tray icons because I don’t like to bloat the desktop with something that is not originally supported.
So I switched to Nextcloud which interface was quite good, but the developers updated it in a mess like the old megasync.
Then I tried other services like PCloud, Dropbox and Seafile, but their interface is not good, same as new Nextcloud.
Is there a cloud service that really fits well in Gnome Shell?