At least on android Firefox has Google tracking built into the app among much other tracking/ads. If you don't like Brave you may want to consider a Firefox fork. On IOS Brave is the only big browser with competent adblock afaik until/unless Firefox gets extensions going.
Edit: I forgot criticizing Firefox is wrongthink on the fediverse and will get you donwnvoted no matter what. Even if it's in the context of advising people to switch FROM Brave TO a Firefox fork on Android.
Fennec doesn't have any of it (Google Analytics, Pocket, Mozilla Tracking), which is why it's my choice of mobile browser. It's on FDroid