Unfortunately Firefox by default is not very private hence why Brave even took off in the first place. People are too lazy to spend a couple of minutes configuring and understanding how their browser works to make it as private as possible, and instead trust a shady third party company with no long term history to create a “private by default” browser. Now Brave obviously does good to protect your privacy from big tech like Google or Microsoft, but not from they themselves, they even block other companies ads but replace it with their own ads. Shady as hell.