But we know where they were. If we find something that exists where there have been no landings, then that would be a piece of evidence.
What were people, who hadn't even invented writing yet 10,000 years ago, doing on the Moon?
I don't know if there were humans on the moon before 10,000 years ago or not. The fact that there is no writings before 10,000 years ago means no one knows. Probably wasn't but weather patterns, volcanos, plate tectonics, and comet/asteroid strikes destroy evidence so quickly on earth that there could've been an entire civilization and it could have sunk to the bottom of the ocean or under 200 ft. of soil. Here's an ancient Egyptian carving at Abydos.
Looks like a tank, helicopter, glider, and a blimp. All in the same carving. If these were scattered, it wouldn't be so interesting, but when all four are in the same carving, you have to wonder what was the carver going off of.