If you have $2000 then you can easily earn $100 a day by gambling. But if you want to win by gambling then you must have good knowledge about casino and if you are betting then you must know about the players. If you are not experienced in gambling then you are likely to lose money so learn well before betting. You have to accept that if you want to earn you must lose by starting gambling with the amount of money you can afford to lose.
Isn't the world of gambling that everyone who bets wins and loses, based on 'luck' for them.
I think no matter how good someone is at betting in gambling, they will never and succeed in reaching $ 100 / day, if there are people who think with $ 2k capital used in gambling, to make $100/day is absolutely ridiculous and makes their finances worse, we are not James Bond, when gambling and betting scenarios are prearranged, who loses first and who wins at the end of the game.
OP, use the money wisely in other ways, apart from gambling, I'm sure there are other businesses or ways to make $100/day besides gambling, remember nothing can guarantee you win every round when gambling.