Configure Okta Auth for .NET MVC -- 2

I need help configuring Okta authentication for my already developed .NET MVC 8 application.

Requirements:
- Simple login page
- Authenticate users via Okta
- Redirect back to login page post-authentication

Ideal Skills:
- Expertise in .NET MVC and .NET 8
- Experience with Okta integration
- Proficiency in creating secure authentication flows

Please ensure the implementation is secure and follows best practices.