Thats why everybody should gamble only with money they can afford to lose.
Some people say that sports betting is more safe than other gambling games but this is infant not true. It maybe the fact that in sports betting you have something to think about and then take decisions but it is not 100% safe.
Gambling overall is not risk free. Every gambler must understand this before they start to gamble.
It is indeed safer than most gambling games. The results aren't determined by luck but by the skills of the players in the game. Upsets can happen of course, but what are the chances of that happening in a regular game where the other team or player is considerably more skilled? If you know a lot about a sport then your chances of winning bets is of course higher than those that don't have much informarion on it. That's why it's far from luck based games.