LibreWolf is a great privacy oriented Browser for desktop. But there is no version for android or IOS . There are some like mull but they have their own problems. Mobile phones stay with us most of the day. So we need extra privacy for it.
Just to mention, Fennec's F-droid page does list the following as an anti-feature:
This app tracks and reports your activity
Connects to various Mozilla services that can track users.
It does say that telemetry has been removed, but that it still connects to services (like Firefox Sync, for example) which could still potentially be used to track you.
That's not a dealbreaker for me personally, but if it bothers anyone else, it seems like Mull might be the more privacy conscious choice, at the cost of some convenience features.
I recommend a combo of Mull and Mulch or Cromite instead. Configure one of them to delete cookies and history on exit. Use URLCheck as your default browser. Then you can see the actual link when you click on one, you can remove tracking parameters, and then choose which browser to open it in.