With @adswa we built a #gitAnnex special remote for https://internxt.com/drive
They offer "lifetime" plans for >>TB-sized zero-knowledge-encrypted cloud storage.
Should be good for private stuff.
The special remote implementation is wrapped around the official CLI.
It is not without issues (see README), and the API availability could be better. But if you don't like their android/desktop app, this could be means to put that drive to good use.