Mostly stopped using it when the last few updates started to make my mac CPU crazy everytime I use it. It always been not great on macos but now it is just unusable.

Still using it on android but it takes ages to load the first page when the app just started. It really is bad.

I stopped donating to firefox too considering the hypocrisy of the for profit business parent business that fired a ton of good engineers to pay its CEO more.