You're not making $100 per day on a consistent basis at any casino on unskilled games where the house controls all the odds and mathematics behind the games. They exist to make money and most are rudimentary, where they might just focus on games and not even offer anything like sports betting or poker. If you have to ask the question, then it's most likely that you won't have the ability to even work your way towards profitability without a very long learning curve, that will be expensive to complete. There are a lot of clever people out there who have developed certain strategies which may end up with profitability, but it often takes immense intelligence or a lot of practice - learning what works and what doesn't, which nobody is going to give up an answer to easily.