My understanding (IANAL) is that being aware of a high profile case from media reports or documentaries or such things is not by itself disqualifying. It comes down to whether the juror can maintain an open mind and base their vote fairly on the evidence in the trial. If this was not the case then it would be difficult for any high profile national figure to secure a jury trial in any jurisdiction.

This explains the process https://en.wikipedia.org/wiki/Peremptory_challenge

yeah, full stop. I wouldn't lie when questioned about that either.

Very bad to lie about this because the court can easily subpoena Netflix records to see that you did.