You should use Vanadium though, since browsers have a huge attack surface and Firefox isn't very secure

1. When it comes to browsers, the more you try to hide, the more unique you become and stand out. I recommend stock Firefox with an adblocker and Multi-Account Containers since you look more regular

2. IronFox is great on a regular Android phone. Vanadium is better for GrapheneOS since it's sandboxed and an attack or hack could compromise your phone. You are trading security vs privacy, so choose carefully