How to get user information when using google authentication in dotnet 8 MVC?

Hi, I'm developing a web application in dotnet 8 MVC. I need to use third-party authentication using google authentication. I have implemented a basic authentication however I cannot retrieve user information like gender, date of birth, mobile phone from claims.
Code files: https://pastebin.com/L8VX6i92 - Program.cs https://pastebin.com/6tjj83ed - ExternalLogin.cshtml.cs What I have tried? https://stackoverflow.com/.../how-best-to-implement... I appreciate all the help.

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