The Pi itself has a local camera (presumably) attached to it. So you should attempt to connect to the camera within its own interface via 127.0.0.1 as an IP address.
From your workstation, try to visit http://192.168.0.11:8080/?action=stream to see if you can view the webcam remotely. If you try to use your router's public IP address that's not going to work (and shouldn't). You don't want any of your private IP addresses forwarded/routed to the Internet for security reasons.
why failed? test webcam from online tools because there are so many online tool that offer free service to test your webcam, just like i recently found a site https://webcammictest.io/ where i can test my webcam if it's working or not.