1: There are no stars in the photo because there is no atmosphere to carry the light from the stars to our eyes in such a way that makes them visible.
2: A rover that has already landed on the moon (and survived) may already have a camera on it.
3: The flag was disturbed as it was planted into the ground and kept its bent shape because of the lack of strong gravity on the Moon.
Case closed, my way, oR ThE hIGhWay!