Umer Rashid, Based on my understanding of you issue post deployment, you are unable to see the logs. To better assist you on this, what deployment method are you leveraging? What is your app framework? Do you receive any specific error message during the deployment or while accessing the WebApp?
To isolate the issue, you may leverage App Service diagnostics from Azure Portal> Navigate to your App Service app in the Azure Portal.
In the left navigation, click on Diagnose and solve problems
- Review - “Configuration and Management and “Availability and Performance”
If you haven't done, enable and review logs to fetch more details about the error: #enable-application-logging-linuxcontainerCheckout the log directory/location information -here - Access log files
https://learn.microsoft.com/azure/app-service/troubleshoot-diagnostic-logs#access-log-files
Kindly let us know, I'll follow-up with you further.