I tried that, it didn't work. I love containers, and it was one of my attempts to solve it. I forgot to include that one in the post, I've tried so many things...
https://support.mozilla.org/en-US/kb/profile-manager-create-...
Anyway, my last attempt will be to create a new profile. I was avoiding that because it feels like quitting. It feels like destroying everything and replanting the soil hoping for a better outcome even though you have no idea what happened before.