The moon is lined up with the Sun from out side our point of view on Earth.
We see the dark side of the moon or, rather, we don't see the moon at all, because the extreme brightness of the Sun outshines the extremely dim Moon.
NEW MOON l WAXING CRESCENT l FIRST QUARTER l WAXING GIBBOUS l FULL MOON l WANING GIBBOUS l THIRD QUARTER l WANING CRESCENT