

Maybe you are talking about the color overlay that they add to images? This explains some of the reason. https://www.lroc.asu.edu/images/192
Edit: just realized this was explain like I’m 5 so I can add a little excerpt.
Not sure exactly what you mean by fake. My biggest guess will be the coloring of the images. Why are space photos always so vivid? This is because the images are color overlayed from a lot of images that are actually taken in single color themselves. Be it black or white, black and blue, etc. Once the individual images are received, they then piece them together go try and mimic the visual humans will see.
Photos are shot in single color because they are easier to process and also much smaller in size. This makes it better for transmitting.
This explains coloring in space.
https://socratic.org/questions/why-are-space-images-typically-black-and-white
Note: there are probably images from the ISS that are taken from normal cameras