* The Sun's Brightness: The Sun is incredibly bright, and its light overwhelms the faint light from distant stars. This is similar to why we can't see stars during the day on Earth.
* No Atmosphere: The Moon lacks a substantial atmosphere to scatter sunlight and create a blue sky. This means there's no "twilight" effect to dim the Sun's glare and make stars visible.
* Lunar Day and Night: A lunar day (the time from sunrise to sunset) lasts about 29.5 Earth days. This means that for almost two weeks, the Sun is shining directly on the Moon's surface, making it impossible to see stars.
However...
You *could* see stars from the Moon's surface during a lunar eclipse! During a total lunar eclipse, the Earth blocks the Sun's light, allowing the faint light from stars to become visible.
