I liked focus and the DDG browser but settled on brave as the best for fit for me.
I don't love any of them but brave works best for the limited way I use my phone. I do check in on the DDG and focus browsers every 3 months or so to see if I want to switch.
Firefox offers various privacy features (check about:config), but they're opt-in and typically have a bar to entry for users to be willing to change settings and know what they will do.
Mozilla might claim to care about privacy, but by not clamping down on third party content and referers, it left most of its userbase in the position of having their privacy invaded by default when using their product. If you care about privacy you fix that, they didn't.
much smoother scrolling