Owncloud or nextcloud? Owncloud is a bit less private, but has third party cloud offerings as well, if you don’t want to host it all yourself.

murena.io, maybe, at least where privacy is concerned. (Their free 1GB is laughably small.) But honestly, there's nothing better than hosting your own on old hardware.

I’ve heard of a program that make a crypted file that you could put into your Drive.

However

1. I don’t remember what it was and I’m hoping that someone here could remember it for me
2. I don’t know how it would work if you open it on a phone or tablet
3. google will have the data relative to who have access to the file which is kind of their business model

10gb - https://filen.io/

Proton Drive is pretty good. They have a word processor and now a spreadsheet and can also manage photos with albums. 

More details?

Today with the ability to store so much at home and then use a clouds as backup, I don't see much use for cloud storage service over which I have little control, and would need to encrypt anything I store there anyway.

I can see use-cases, but for most I'd still rather self-host.

I know it's not free but sync.com have a $1/month plan with 25GB and it's fully encrypted.

maybe MEGA.io