I’ve gone between a few but on desktop it’s Librewolf. Just like Firefox but more privacy by default. On Android I’ve tried Fennec, Brave, Iceraven, and Mull. Out of all of them Iceraven has been my favorite simply because of its support for desktop extensions.
Bromite would be my first recommendation, but it haven’t been updated since January this year. But give it a try if it is not a big deal.
Besides that there’s privacy browser