Just use LibreWolf on desktop and IronFox on Android.

They basically strip out all the anti-privacy, anti-user "features" from Firefox.

+1 for Librewolf, but this is the first time I've heard about Ironfox.

https://gitlab.com/ironfox-oss/IronFox

You can use Librewolf, or the Firefox-based browser from Swedish VPN company Mullvad.