I'd recommend sync.com - end-to-end encrypted, cross-platform, and have one convenient feature called "vault" which is basically a partition that lives in the c

I'd recommend sync.com - end-to-end encrypted, cross-platform, and have one convenient feature called "vault" which is basically a partition that lives in the cloud only, that is it's not being sync'ed across the clients. (i am not affiliated with them, just a happy customer)