I mean, have you received a summons (letter) from the courts telling you that you’re selected to be a juror. You show up to the courts and assigned a number along with being asked about occupation, status or whether you know anything related to the case in question & etc. but is the probability on becoming part of the 12 jurors that high? Is it also a criminal offense for failing to show up?
The times I was at jury selection, the judge issued warrants for the people who failed to appear.
I have been summoned 3 times (in my 60 years) , and was selected for a jury once.