~snip~
The gambler should learn the game before start to use of their money in the betting,because the money using in the game was earned by the gambler by the hard work.The gamblers who want to successful should play one game like op said it may be Black Roulette or cards game like poker.The prediction will give you money,but the odds not works all the time.The jackpot for the gamblers was based on their luck on the specific day,the other game was based on luck and the analysis of the particular game.The gamblers should understand the real game and use their money in the right place to get good money from the game using their analysis.
Gamblers must always have understanding to be able to minimize losses and of course with understanding it will make it easier for gamblers to have the opportunity to win the game.
This will not guarantee anything to be able to win game, but there will be various benefits from the understanding and knowledge that they have. If gamblers bet on games without understanding and knowledge then it is clear that they will only be careless.
The game you mentioned is game of skill and when played without knowledge and understanding, defeat will always occur, playing poker or playing cards will never be easy to win without knowledge.
Gamblers need calculations in using playing strategies, they will need skills in managing cards to play, isn't it that playing carelessly will also result in failure.
Moreover, wise or professional gamblers will always be able to understand what they are betting on and of course they will be able to master what they are going to play.