can I access the "/Identity/Account/Login" & "/Identity/Account/Register/" action methods and Controller inside my asp.net core MVC

I have created an asp.net MVC core web application which uses individual accounts, as follow:-

where i got a predefined Register and login logic (actions methods and Views such as /Identity/Account/Login & /Identity/Account/Register/), but i can not access the related controller classes and views,, so is it possible to access and modify the built-in registration and logging logic?