I recently learned how to count cards in Blackjack which on occasion I play at casinos. The High Low system works like this 2 - 6 facecards are +1 and 10 - Ace cards are - 1. When the running counts get to plus 3 and higher the count is in the players favor and you start raising your bets.
I learned this from Colin Jones a “Christian” card counter who formed a Church team called the “Holy Rollers.” His premise is that the bible doesn’t mention gambling and in fact the drawing of lots was used several times in the bible including by the Apostles to replace Judas. Also his premise is that when you count accurately you have a slight edge over the casino and over time you will actually win therefore it is not gambling. It is not a get rich quick scheme, it is a slow grind and I think people who have a love of money will not have the patience for this as it actually is hard work!