The risk mainly depends on the gambler, the more experienced the gambler is as a gambler, the more risk he is capable of taking. Maybe I am weak as a gambler but if I take big risks then of course I will have the highest chance of losing. But this is the most important thing to remember for every gambler, one should take big bets in gambling based on experience, a person I know has been playing for about 18 years and is not that experienced.
But he took big risks and bet and won the first time, later he faced people and bet more than that again and lost all his money. So the lesson to be learned from this is that it is best to bet based on experience as a gambler.