Can you solve the problem with TV as a second screen?

I connected my laptop to my TV using an HDMI cable. That wasn't a problem either. Projecting the image also works, but when I then go to expand and on my TV for example. YouTube wants to open, then it opens on my laptop and not on my TV. Word opens, however, for example. On the TV. Does anyone know a solution for this?

If a window opens on the wrong screen, you make it smaller, move it and make it bigger again.

You now have two screens and they are numbered 1 and 2. With you, the first will be the laptop and there you can also see the taskbar. But you can also change the assignment. Right click on desktop and then on screen resolution. You have come to the right place and you can choose which one should be the first screen. Under 1 it says, this is the main screen! If you manage to get this under number 2, it will work properly.

Thanks for the help.

Thanks for the star