How can I rotate the picture on the laptop screen?

I have a new laptop that I rarely use, gestures evening I used it again and my dear cat sat down on the keyboard (!) … And now the picture is twisted! I've read that you can do something with Alt and Ctrl… But how?

I'm very happy about help, and thank you in advance!

Try it with:
Alt + any arrow
or:
Ctrl + any arrow

Did it work?

YES! It worked, thank you very much!