Best options for storing private adult/sensitive content?

Without getting too into the specifics, I shoot content for 'creators' as well as shoot my own content for/with my partner. I also maintain a substantial archive for my photography side-hustle, which is ever growing.

All the videos/photos are all stored on my 16tb home server. While I'm not too fussed with the storage sizes at the moment, I'm more concerned about protecting both the models/my partner (and myself) against any form of hack, or even burglary.

I'm paranoid that if someone physically steals my server, they will gain access to a bunch of sensitive information, and I'm paranoid that if someone gains access to some sort of cloud storage I am looking at purchasing.

I currently have Backblaze unlimited backup which is great, but it's also quite a chore to go through to find content to download. To me, it's more of a total backup solution. I was wondering if it's worth maintaining the backblaze as a backup solution, while getting some sort of cloud storage (I've been looking at filen/pcloud) meaning me and my partner can access and quickly view the content we make, making organisation/posting far, far easier.

Does anyone encrypt locally? (Is that a thing? I'm fully new to this), so if someone physically had my server, they wouldn't be able to get it. As well as have some sort of sync solution/cloud storage that allows me to access the storage folder in explorer (and on mobile devices), making life easy for me.

Cheers!