Picture on the laptop at HDMI transmission downsized, how can I get it big again?

Today I connected my laptop to my TV via HDMI cable. When I wanted to change the resolution, I probably pressed something wrong, so that the picture on my laptop is reduced. How can I enlarge the picture again? If I rausziehe the HDMI plug, then the picture is again normal size.

Open display settings (also known as Display Settings) in Windows and select the correct resolution for the laptop display.

Thank you that worked