If the earth was flat and the sun just circled around it, you'd be able to see the sun at all times regardless of the time of day.
Stars aren't visible in pictures due to the way cameras work, light from the sun and reflecting off the earth are too bright, kinda like how stars are more visible in areas that aren't brightly lit than they are in a city.
This information is a Google search away but flat earthers refuse to believe it, which makes these debates extremely pointless. You go back and forth with them with this information until you get tired of it.
Smh none of this is correct
Theres a concept called "perspective" that you probably need to do some research on
This is how your eyesight works
Everything in your field of vision converges to a single point directly in front of you at a certain fixed distance. You supposedly being able to see the sun when its thousands of miles away, WAY past the convergence point for objects that are MUCH CLOSER to you does make any sense
The human eye can only see so far, that distance is <100 miles on average. On top of that, the atmoshephere itself at the ground level obstructs the view of objects that are a certain distance away
The circumference of the earth is 25,000 miles and the diameter is ~ 8000 miles away
Why you think you should be able to see the sun when its 1000+ miles away from you makes absolutely no sense, unless you can point to another object that you can see with your naked eye that's 1000+ miles away at ground level
And if the high powered cameras you speak of are still subject to "atmospheric refractions" then they are unfit and invalid scientific tools period and shouldnt be used for any scientific measuring since they are still inherently flawed
That also doesnt change the fact that the higher elevation you are, the less atmosphere you're looking through, the more stars you can see with your naked eye
Yet this principle supposedly randomly doesnt apply to cameras, instruments that are modeled after the human eye with enhanced magnification levels
In other words, the argument that the camera "cant see the stars" is invalid