gamblers sets aside their emotions when they are gambling, gambling = risking, that means everything that we win or put in our balance would probably be busted in the long time..
Gambling is always a risk and there is nothing to do about that but there is a chance you will make profit in a long term but indeed mostly not because you will need luck.
Gambling is all depending on luck so its almost not possible, and its also what you consider as a long term.
For provably fair games, yes you need luck and depending on luck. But on sports betting you don't need to much luck. it's different with provably fair games. and sports betting has a better chance to win and an be profitable in the long run.