So allegedly, you cannot be the monster if you have a pre-made group… well… not anymore! Just had 2 rounds where I was put in as a monster (my 5th choice) round 1… as a premade…
did you have around 2 or 3 people? if so, you might have been paired with another group. This allows everyone a fair shot at the monster (i think). If you had 4 people I have no idea how that could’ve happened save for an insane amount of luck.