If you cannot do that you have Aphantasia: https://en.wikipedia.org/wiki/Aphantasia

I don't see photorealistic pictures on the backs of my eyelids or anything, I don't know if people can do that. For me it's sort of abstract, like a Picasso or caricature, or like looking at something out of the corner of your eyes. I am aware of the nature of the thing but I do not see a camera picture inside my head.

Yup, it's like a secondary space. Doesn't visually overlap with real vision, but it's still surrounding in the same manner as real vision.

Wait, you can't? I can also watch a movie again in my mind.