What is this hardened Firefox I hear about?
The one video I saw suggested running this betterfox.js file or some more elaborate ones. Is that really necessary?
Or are there just some settings that I should change?
(Already run ublock origin if that matters.)
LibreWolf is a great starting point. Otherwise, here's a more guide for more thorough hardening: https://brainfucksec.github.io/firefox-hardening-guide
When I was using Librewolf, it seemed to lag behind on updates, which is a non-negotiable for me.
I now run FF with arkenfox user.js, so youget updates right as they are released
+1, the minescule amount of extra work (moving some files to your firefox profile's directory) is well worth it over just using Librewolf