Websites smaller (not because of zoom)?

I always use the touchpad of the laptop (Medion, Windows 10) and while scrolling it is like my websites are smaller or more tight. I've already looked at the zoom, but it's 100%.

I would be very happy if someone could help me.

There's usually a setting such as "adjust page power to screen" or similar

Many thanks for your response. Unfortunately, I still do not know how to adjust it