after deployment my core web app was not running and i also has the web.config issue - ?\C:\inetpub\wwwroot\application\web.config. i also downloaded the windows hosting bundler installer for my .net core 8 version and it resolved my issue and my website was up and running.

https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-3.1.3-windows-hosting-bundle-installer