Some people love and knows everything about soccer why some people love and knows everything about basketball, so also table tennis, volleyball, baseball, horse racing, handball, snooker, boxing, cricket, golf etc. Any sport you know very well, you can gamble on those sport and avoid gambling on sports you know nothing about, one of the reasons why some set of people lose money a lot when it comes to gambling is because they gamble on sports they know nothing about with the slogan " gambling is all about luck" yes gambling involves luck but that those not mean skill and knowledge is not involve, if you gamble on sports you know nothing about then you are gambling blinding and your chance of winning are very small compared to when you know everything about that particular sport, when you know a lot about a particular sport prediction will be easy for you.
Just because you know everything about a particular sport does not mean that you will be successful when gambling on that sport too. Gambling is still a game or luck but you should not leave everything to luck to do it for you. You have to put in some efforts while you still wait on luck to help you win. Knowing things about the sport that you are gambling on will help increase your chances of winning by you not picking the wrong team but for an individual that do not have any clue what he is doing, he will pick an underdog to win a bigger team and then he loses. Although at times, it might work in his favour and he wins since in some games, the underdogs win and their odds are always bigger, making your reward to be very big.