Looking for logging into the Razor Page 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 Razor Page site. After that you can login as usual with your login credentials.
https://www.c-sharpcorner.com/article/asp-net-core-razor-pages-simple-login-using-entity-framework-database-first-app/
https://www.c-sharpcorner.com/UploadFile/a2cc7b/login-form-using-mvc-razor/
https://docs.microsoft.com/en-us/aspnet/core/security/authorization/razor-pages-authorization
http://future-shock.net/blog/post/creating-a-simple-login-in-asp.net-core-2-using-authentication-and-authorization-not-identity
https://www.youtube.com/watch?v=lZ-8WsCUjCc
https://www.youtube.com/watch?v=HXfhPj1rlQ8
https://www.tutorialspoint.com/asp.net_core/asp.net_core_log_in_and_log_out.htm
https://www.codeproject.com/Articles/482546/Creating-a-custom-user-login-form-with-NET-Csharp
https://archive.codeplex.com/?p=razorlogin
http://www.mikepope.com/blog/displayblog.aspx?permalink=2374
https://stackoverflow.com/questions/37509389/checking-login-user-authorizepolicy-in-razor-page-on-asp-net-core
https://stackoverflow.com/questions/14969167/checking-login-user-role-in-razor-page/14969217
https://www.learnrazorpages.com/identity/customising-identity