I don't concur. There is absolutely no mathematically way to make money in a casino (except own it).
Some games, such as blackjack, allow one to lose your money slower than other games. But the end-state is always the same, you will 100 percent be a loser by gambling. There is no art involved- a casino bet is 100 percent math- and a suckers bet.
You can count cards in Blackjack, and make money. It’s difficult, and illegal in many places, but it’s doable.
Because the player can adjust their betting, and the dealer cannot, if the deck becomes “ten rich” - i.e., has more face cards than a normal distribution, the odds of the dealer busting on a given hand go up. Player adjusts betting, and bets, upward to take advantage. If the deck becomes “ten poor” player adjusts betting, and lowers bets to stay in the game while reducing loss.
“Beat the Dealer” by Edward O. Thorp was the first book to popularize this strategy. And it works. Burning the first card, multiple deck shoes, and ending the dealing before the end of the shoe are all game rule changes to minimize the impact of card counting.
You have to have a bankroll of at least 100 bets, and you must count every card to eke out the advantage, and most importantly, you must not get caught.
I‘ve done it, having read the book, and practiced before going to Atlantic City, in the mid 1980s. Not easy. Not recommended. But it works.