It’s annoying fragmentation when even for a stable distributable package there’s flatpak as a standard, and I’ve never seen why Ubuntu needs their own with a proprietary store.
Like I generally tend to favor native packages, but I can at least appreciate Flatpaks having advantages and times even I want to use them. (Largely when stuff is a pain to compile on Arch for library reasons.) Snap is a non-universal universal package format.
(Also going to shout out AppImages, which are an entire package as a single ELF file you can run on basically any distro. I’m not sure how good they are for important work, but I just think they’re neat and have come in handy for running stuff on old CentOS in the past.)
I’ve got a Tarsnap account backing up my especially important data every night, which is admittedly only a couple of gigabytes of scans of important documents, hard to replace files, etc. It’s doing snapshot-style backup with a backup for every day in the last week, every week of the last month, every month of the last year, and the last three years. Paying less than a dollar a month for it, so it’s working out.
That stuff also gets rsync’d each night onto my NAS, which has its own automated LVM snapshot system going on along the same lines, and I’m using syncthing to mirror it onto my other PCs as a final last-ditch backup (and in case I need it elsewhere). Finally, there’s an external hard drive I keep manual backups on every once in a while.
Larger datasets that aren’t really stuff I want to pay for on the cloud (14 TB worth) just get stored on the NAS and a drawer full of external hard drives. Not ideal, but it’s just way too much data.