I am not a historian. I am given to understand that we know mostly of Casanova through his own writings. Where there are other accounts of events, Casanova is often not mentioned at all. So he may be an unreliable narrator of his own life. Less of mover and shaker and more of a minor figure who may not have had any actual role in the events of his times.

https://wiki.lspace.org/Giamo_Casanunda