I do have file versioning on my save game folders. Hourly backup. Have saved my ass a couple of times when a game has limited number of save slots. Like BG3 has. š Dont judge me, i easily do 25 quicksaves in less than 15 min sometimes.
Why is the quick save count limited to 50 at most (25 is the default IIRC)? I'd rather increase that considerably, since I also quick save very frequently. Disk usage isn't really a big concern (a save on the scale of 1 MB is nothing when games these days are on the scale of 50-100 GB).
Though with less frequent auto saves and manual saves at notable times, I think there's pretty good coverage for saves even without any form of backup.