Free form attrition rates are pretty big. Always a handful who either leave, flake, etc it's to be expected.  I mean if I had like twenty+ people in a game over the course of the game like less than half would remain you know? It's why they advise when running games to always aim for high amount of people because when the drops happen you still have a stable pop.

And with that in mind you then to aim at the remaining players to amuse them and keep them interested. Mind I haven't fulfilled the latter but I'm gonna give a damn try! Now that I'm freed up.