The number 7 is seen as lucky in slots and pop culture because it often...

https://www.booknose.win/the-number-7-is-seen-as-lucky-in-slots-and-pop-culture-because-it-often

The number 7 is seen as lucky in slots and pop culture because it often represents good fortune and completeness. Many slot machines feature the "777" jackpot, a winning combination that players recognize