Good pics ! Sharpness is here.
Manual 24mm f/2 AI/AIS (and previous versions) are great lenses. I had 2 versions : an old AUTO and the AI version. Both as sharp and sold a while ago when I got the great 24-105mm Sigma Art (also sold).
I have still the f/2.8 AUTO version which needs grease.
I noticed 25mm displayed in your exifs of 24mm pics. Very strange, because in my Z6 there is 24mm available. You probably confused the focal when you set on the menu.
Anyway, I find incredible how the crop reveals the sharpness, so, at 1/100 and if handled, the body's VR does the job brilliantly !