Self hosted? Hmm... I guess I'd need a paid thing...
Discussion
You have multiple options:
1. Rent a server
2. Buy a homeserver
3. Pay a service (they could sell your data, so be careful)
All have different advantages and disadvantages you shall check for yourself which fits you better.
Maybe you can check mega.nz as a paid service. I think they have some privacy guarantees, but not sure.
Thanks. Mega is probably best option. Any server I take with will be no diff than a USB stick
It depends. Because, if you rent a server, you can easily do backups, probably even raid, and then a hard disk failure has a lower chance to cause you problems, and anyway you don't put these under the x-ray or so.
I would say, mega is a comfortable option, easy to setup, but you have to trust them.
mydrive.ch
If they're all small files, just your necessary backup, this would be good. You gotta keep it up to date, there's one single mobile app that syncs to it and it is closed source.