Mac has added black borders

[blueberries]

hi

whenever i open an app theres black borders added on to the empty space next to the camera. how do i turn it off?
i cant take a screen shot :/

basically my mac air has the camera isolated, so the black borders make it look like the old mac style.

 

[blueberries]

its a mac air m2 ventura 13.2.1 13.6 inch screen
thanks