I’ve used MEGA for about 6 years now, previously Dropbox. I switched after Dropbox lost over 2TB of my data.

MEGA hasn’t lost my data but something glitched on their side and duplicated every file, and with the amount of data I had in there it wasn’t feasible to manually fix. So I had to delete everything and start again.

I have all my cloud data stored on a NAS at home, that is backed up to a second NAS decice, a MEGA sync client running on home server keeps it all in sync to the cloud. I selectively sync folders from MEGA on different devices, or access files directly from the MEGA app when remote, or work with the local copy of my data when connected to home LAN. At least MEGA works cross platform, and MEGAcmd for Linux allows easy scripting and other automation possibilities.

All commercial cloud storage has one major problem, your files are hostage to their increasing subscription fees (which will always increase because capitalism). e.g. I was paying $60 a year with Dropbox, if I were still using it, it would be $140 a year now - and I’d have no choice but to keep paying.