I need to resize the display on my 27" iMac
I was messing with my display this morning to my fix my own errors and while I did resolve my initial problem, I now have a display that is far larger than my screen. I need to scroll to the edges to see all the icons and folders. I cannot figure out how to resize the display screen. The windows themselves are easy enough but my screen seems to be large enough for 45" display, but squeezed into a 27" one. The Apple in the upper left corner disappears if I scroll the screen far enough to the right to see the vertical line of icons and the clock and calendar, etc. It also has similar problems vertically. I need to scroll the screen up and down to see the top edge or the dock at the bottom.
There is no simple adjustment by putting the cursor in the corners to resize as you do with a window. This is the home screen itself.
iMac 27″, macOS 12.2