The Pyramids were built over 1,000 years before Moses.
weren’t there many pyramids and other construction projects throughout that era of ancient history?
Actually, if Moses flourished around 1800 BC, he was contemporaneous with the building of the last known pyramid, the pyramid of Amenemhet III.
Of course, the golden age of pyramid building was 800 years before Moses - the time when the Great Pyramid of Khufu at Gizeh was built. Khufu's was almost six times the size of Amenemhet III's.
But in Moses' time there were vast public works projects that would have dwarfed that particular gravesite in scale and importance.