Hi all, I'm really looking for some help. I need to create a reliable system of backing up and data storage. I'm not tech-savvy (will work on that when it's a priority in my life, which it definitely can't be right now) and I'm asking this community because it's forward-thinking and aligns with my values. There are things I have right now, on paper and digitally, that I want to be able to retrieve at least a decade from now (and we'll check in on how the situation changes and what's worth keeping or printing out etc then). Most of the stuff bouncing about in my brain is the conventional advice:

1. The age-old "at least three places"
2. Don't store what I don't strictly need
3. Accessible & simple: the less I have to fiddle, the more sustainable it is (kind of seems to conflict with 1)
4. Privacy-first, don't trust clouds, etc (kind of sems to conflict with 1, too!)

I'm not sure (a) if there are any other principles to keep in mind while designing a system that works for me or (b) how this might translate into practical advice about hardware or software solutions. If anything has or hasn't worked for you personally, please share. My daily driver is a LineageOS tablet and it's not clear to me how to best keep its data safe.