Gambling is just trying his luck in the end so if you don't talk about luck here, you won't have clever and relevant discussions in this part of the forum I'm afraid. Well I don't say it's only a matter of luck for all games and bets, but even if you manage to get an edge against the house, it doesn't imply you will be able to win your bets. If you have bad luck, you can lose all of your bankroll despite applying a strategy leading to get a positive expected value on the game.

Gambling is just trying his luck in the end so if you don't talk about luck here, you won't have clever and relevant discussions

Gambling is just trying his luck