YouTube Not Working Despite Internet Connection

I am experiencing an issue with YouTube that I have been unable to resolve. The YouTube website keeps displaying messages such as "No results" and "YouTube Key," and no matter what I try, the problem remains. I have already tried every troubleshooting step I could think of, but nothing has worked.

My internet connection is working properly and the device appears to be connected, so I do not understand why YouTube is not functioning correctly. Under normal circumstances, it should connect immediately, but it never does.

I am requesting technical assistance to determine what is causing this issue. I would appreciate a clear explanation of the error messages and guidance on how to fix the problem so I can use YouTube normally again.