Which CLOUD DRIVE storage is the most secure/private?

[Maya]

I’ve used MEGA because aparently that was the most secure file storage system and was encrypted however my account was banned even though I did not share any of the content I had nor opened it (it was a lot of music and movies) so I lost a bunch of song demos and raw movie files I got from a huge company. So I just want to know if anybody has any idea which provider actually doesn’t scan content? Of course it sounds stupid because you shouldn’t trust any of them.
Also used drop box, drive and onlyfiles