the scenario in gambling is more on losing 100 bucks a day is very very easy rather than earning this amount. but you can, if you are into sportsbetting and you have also good bankroll.
people should accept the reality that gambling won't give you such passive income if you will just play their regular games. as mentioned above, there should be other features of the casino that you are exploring with like the bankroll investment, affiliate commission and others.
In gambling, losing any amount of money can be easier than earning even a small amount, this is also the case with sports betting because there is no guarantee that all bets can be won, even if there is a large amount of money, there is still the possibility of manipulation and low Odds the team will also lose.
Always remember that no gambler can beat the house edge.
Accepting defeat or accepting that gambling cannot provide a steady income is a must because if gamblers have thoughts of getting rich from gambling then believe me they will be ruined in a short time.
As I collect through my observations of other people and my own experiences I see that most beginner gamblers have "quick rich" mindset. It obviously doesn't work like that but it takes so much time and also money for them to learn bitter truth. Although rich gamblers are totally different, they generally trying to be fame and/or professional. Their mindset is different and losing doesn't even matter for them. Average gambler is honestly messing his/her life up through his/her desires of becoming rich quickly.