This is an obvious example of the presentism fallacy: https://en.wikipedia.org/wiki/Presentism_(historical_analysis)
Photographs and recordings did not exist in the 1st century. Not even the printing press. And most people were illiterate at the time. So it is far more likely that nothing would be written versus anything being written during that timeframe.
We do not. Almost no written records from that time period has survived. Everything that we "know" comes from a copy of a copy, often made many centuries after the event.