in the view, left mouse drag (on the zoom icon) is changing the DISTANCE of the camera, not the zoom.
right mouse drag changes the actual zoom (as in a zoom lens), you did too much right mouse dragfing and your zoom is set to something stupid like 2mm lens.
if you are using a camera (which by the looks of the screen shot, you are probably not), then change the zoom in the parameters. if an “editor camera” then simply left drag to get far away from thr objects and then right drag to zoom to it (flatten the perspective)
iq