During the pre-dynastic period of egypt, were the people polytheistic

Yes

The Pre-dynastic period in the history of Egypt is the time period that spans from the Paleolithic to the Neolithic Age, before recorded history. It is generally accepted to have lasted from c. 6000-3150 BCE. There are no written records of this era, but archaeological excavations provide some information about the society during this time period.

It is believed that the religion of Ancient Egypt originated during this period. Elaborate burials suggest that people believed in an afterlife, and the ritual burial of animals might mean that the Egyptians believed in zoomorphic gods (gods with animal form). It is likely that each city had its own patron god, and as the cities grew and came into contact they were all included in a complex pantheon.

they were byzantines