First and foremost, gambling is always depend on luck.
Gambling is definitely a game of luck. But here we are talking about sports betting. Sports betting can be considered as both game of luck and skill. As in sports betting you need to analyse the sports event, do calculations and then only bet in it. So if a bettor is losing, then it only proves that he doesn’t have required knowledge on that particular sport. To be honest,
now for a few days I haven’t seen many gamblers losing money on sports betting, yes they bet on odds with less returns, but never seen losing more than winning.Are really sure about this statement of yours. Like you said before gambling is purely based on luck and that's how the game really is and their is special function you can use to activate your winning although I won't lie I have seen some gamblers who tend to increase their stake volume and reduce the odds in which they bet on but the fact is that sometimes the games still goes wrong and favours the house instead of them.