On Linux. I use both Brave and Librewolf, with Brave being my less privacy related browser. I take Librewolf and harden it further in about:config (not too much to be done though, Librewolf is pretty good OOTB). I then add many quality of life and privacy related addons. Ublock is installed by default. I add NoScript, Chameleon, Alter, Decentraleyes and all my web facing applications have to go through a firejail sandbox. I also use MullvadVPN for when I need my ISP to stay out of my business. I do a lot of similar stuff with Brave, but their brave:flags are not nearly as customizable as about:config. Brave does work better than Librewolf for apps like Jitsi and ChatGPT for some reason. Some apps straight up won’t work with Librewolf. If I know I’ll only need text I end up just using Links terminal browser with searx search engine. No JavaScript, No CSS, just pure raw data.