If you are earning from affiliate programs of casinos, then it could be possible that you will make an average of $100 per day. But if you are a plain gambler targeting $100 per day, I doubt you could make it. Between a gambler and the house, there is not even a fair equation. The house is always a step ahead. Although there are times when you get lucky and win against the house, in the long run, it will always be the house that prevails.
And, of course, casinos are not a place to make a living. They are more of a place to squander money.
I don't think affiliate programs will work either because it has a limit and in this way you really have to be influenced or have a lot of followers and the only people who can do this are influencers who are known on social media platforms.
For me 100$ per day is not realistic especially for gambling, we know that gambling is a battle of luck. And when you are unlucky,
you will quickly lose your balance.