Yes you are right that mate like you said not all the time we are lucky enough to earn every single bet because in the world of gambling we can not predict the outcome so we need to control and discipline ourselves. Because the more we bet big amounts then the more we loss so if we bet a small amount then expect that our loss is small too. And if we have our luck then for sure big amounts of winning we've earn.
The expectations of a gambler in any gamble it plays is to make profit by wining a game because it's something that you think of, before making your bet. I believe that gambling is something you know from your mindset that either you win or lose and some people who is addicted to gambling don't barley know their limit in gambling playing. But sometimes i blame who don't map a particular amount of money for gambling.
The major reasons why majority of us enters into gambling is to make profits and that is what everyone likes and want to jump on so we can make a lots of money from it. The history of gambling can sharpen out mindset on how everything about gambling started so we can get some info on what we are doing right now and those that had success playing what see difficulties in and that can reshape our attitude towards gambling.