with linux and kde you could create an encrypted kde vault that’s mounted to your librewolf profile folder (and you can change librewolf settings to save history, cache, etc.)
if you don’t want to use kde, it uses cryfs in the background, which has a cli tool as well. unmount the volume after using the browser and profit i guess, though i do agree with the other commenter that this doesn’t make much sense in my head.
that’s unfortunate. have you also tried removing the *. prefix?
i’ll do some testing later myself, but that’s good to know. i got those domains from random reddit threads after having had enough of the issue, and i’m pretty sure i tested if either one worked on its own but the memory is so fuzzy i’m just making up false memories. just a minute earlier i was convinced i didn’t actually do any testing.
I’ve had the same problem, in my case it was that my adblocker was blocking the domains used to track video position, which are mildly tracking-ish in nature.
*.video-stats.l.google.com *.s.youtube.com
it is set into the concrete/stone floor, which is a trait of storm drains