One thing that I noticed for my internet is that when I port forwarded my webserver and I tried to connect to it using my public ip it would say that it was not available, but when I connect to it on my phone or on my schools network I am able to connect to it, also one thing you could try to do is go to google and type in "IP" into the search bar, copy the ip it gives you and then go to google translate and paste in your ip, and then click on the blue ip address in the right window, and that should show you if you successfully portforward your web server

One thing that I noticed for my internet is that when I port forwarded my webserver and I tried to connect to it using my public ip it would say that it was not available, but when I connect to it on my phone or on my schools network I am able to connect to it, also one thing you could try to do is go to google and type in "IP" into the search bar, copy the ip it gives you and then go to google translate and paste in your ip, and then click on the blue ip address in the right window, and that should show you if you successfully portforward your web server.