Using Xamarin.Forms with Firebase Auth

[Rewbean]

Hello. I have a weird issue while implementing login with Firebase.

I have Xamarin.Forms version 5.0.0.2515 and I can't install Xamarin.Firebase.Auth in my Project.Android because Xamarin.Forms must use Xamarin.AndroidX.Browser(>= 1.4.0.1) and Xamarin.Forms must use Xamarin.AndroidX.Browser(< 1.4.0.1).

I tried to install a previous version of Xamarin.Firebase.Auth but it doesn't recognize methods like FirebaseAuth.GetInstance() or FirebaseAuth.CurrentUser()

These nuget packages author is Microsoft itself. How could I solve this?

Also this does not happen with Xamarin.iOS.Auth on the other side, but I need to do both implementations.