Honestly, almost any PIN is probably fine so long as you don’t have it written on the back of the card or something. Cards get locked after like 3 failed attempts, so the number itself doesn’t have to be unique or rare.

Hell - even if you gave them the first digit and the thief could eliminate 90 percent of of the remaining numbers based on probabilities, the thief would still have less than a 1:30 chance of getting the right combination before the card was locked.