Others have addressed these, but there are a few additional points that may be useful.
Still Photographs - Cameras were fitted to the Astronauts chest - there was no view finder and photographs could only be taken by movement of the body but 1000's of flawless photographs were taken.
The camera mount was not rigid and afforded some flexibility to move the camera. More importantly, the cameras could simply be lifted off and held in the gloved hands. They were modified for ease of use with the limited dexterity afforded by the gloves.
The astronauts themselves received extensive training in use of the cameras and took a lot of practice photos. Some, of course, were more proficient than others.
Images show that Stars were missing from the black lunar sky
The lack of atmosphere on the Moon only gives about 15% improvement in visible light transmission over a good dark, dry, high Earth observing site. The stars don't become magically brighter, and given the limits of what the Apollo missions could bring with them, any well-equipped amateur astronomer on Earth could have taken much better astrophotographs anyway.
They did bring and operate a small ultraviolet telescope on Apollo 16, because Earth's atmosphere attenuates that part of the UV spectrum rather strongly; this provided an experimental opportunity. But Apollo was about lunar science, not stellar astronomy.
Seeing the stars from the Moon, or photographing them, was hard because of the difficulty in obtaining a view of the sky without sunlit Moonscape or other objects in the field of view. IIRC, at least one astronaut with some difficulty was able to do this long enough to see some stars, but he didn't have time to properly dark adapt given their busy schedule.
Grainy, Unclear images although technology at the time could have produced much clearer images - Did NASA intentionally make the images hard to see?
I don't know where you read this, but the question doesn't make much sense, given how much effort was put into obtaining thousands of high-quality still images and hundreds of hours of high-quality film and video motion imagery. The video quality improved over the missions as the technology suitable for lunar use advanced.
Shadows - The only source of light on the moon was the Sun but shadows
were cast in multiple directions
Not much to add here, except that the same effects can be seen in Earthly photography.
