Asp.Net Core with Keycloak

I am trying to use Keycloak auth services to use with ASP.NET Core 3.1 application, I went through below links and none of them were useful, reason being obsolete

https://medium.com/@xavier.hahn/asp-net-core-angular-openid-connect-using-keycloak-6437948c008

Also, I tried couple of sample application hosted on git

https://github.com/Gimly/SampleNetCoreAngularKeycloak

https://github.com/ewertb/ASP-.NET-Core-Web-API-KeyCloak