Zoomed photos are still showing cartoon characters

I copied the picture and used another image viewer to zoom in, and I'm afraid I don't see anything.

I wonder if you might be seeing things there in the way that our minds make us see a man in the moon or pictures in clouds, and stuff like that. Our brains are made to see faces and familiar shapes. We are so good at seeing patterns, that sometimes our brains make patterns that others don't see. What do you think?

"pareidolia"

Try a google search on iphone photo artifacts to see if other reports are related to your concerns, e.g.

Can someone explain a strange artifact in… - Apple Community

I took screenshots of your pics and I circled the extra “cartoon characters” images that I see. Are those the extra added images that you see?

Could you please give me the name of the image viewer that you used?