Looking for logging into the Xamarin Facebook Button site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Xamarin Facebook Button site. After that you can login as usual with your login credentials.
https://evgenyzborovsky.com/2018/03/09/using-native-facebook-login-button-in-xamarin-forms/
https://forums.xamarin.com/discussion/102703/how-to-create-working-facebook-login-button
https://gist.github.com/luca-barbieri/9258bd399d1f5a83597b
https://github.com/yuv4ik/XFFacebookLoginButtonExample
https://stackoverflow.com/questions/30600788/xamarin-forms-facebook-login-button
https://www.c-sharpcorner.com/article/xamarin-android-login-with-facebook-authentication/
https://tvoss.github.io/app-dev/wavelength/2017/05/07/facebook-login-with-xamarin.html
https://causerexception.com/2017/10/21/facebook-native-login-with-xamarin-forms/
https://dotnetco.de/native-facebook-login-for-xamarin-forms-android-projects/
https://docs.microsoft.com/tr-tr/azure/app-service-mobile/app-service-mobile-xamarin-forms-get-started-users