Pretty are high… would be more rare if one did not hit.
The Moon gets hit by about 2800 kg of meteor material per day.
If we imagine a typical large musket ball with a mass of 28 g, we could imagine 100,000 of them rain down on the Moon each day. That sounds like a lot, but it is a big Moon.
https://www.forbes.com/sites/quora/2016/12/29/how-often-do-meteoroids-hit-the-moon/#59ba898c6f2b
So… what was your point again? Something about flat earth?