You can lead a horse to water but they may not even realise they need to drink....
Ah people deleting stuff. It happens, done it myself to someone's PST archive when I upgraded their PC to Windows XP, they were not supposed to be using local PSTs, but users....what you going to do. Upside is, she still doesn't talk to me.
I remember the classic case of a lady at a school I worked at asking if I could recover her duaghter thesis as their son had done a Windows 98 "upgrade" on the familiy PC and wiped everything a month before it was due in. That cost about £300 (about 23 years ago) to recover from a proper HD recovery company.
I sent may kids to University with a 1TB Onedrive set up and 256GB USB stick, and told them they need at least 3 copies of everything, one on laptop, one in the cloud (OneDrive or Uni storage) and one off line (USB,CD,DVD,External Drive). If you lose work and haven't done that don't even think of bothering me. For the last I even set up her laptop so that when ever she plugged in an external drive it would back up all her documents.
One of them did manage to download ransomware as part of a film download but least he had enough copies of pictures on phones and work in at least 2 out 3 places that a rebuild and recovery actually got it all back.
Lesson learned and proved the old git actually knew what he was talking about.