Hello, I think I could help you with this project. It's easy to figure out probabilities for lotteries. Expected value also isn't hard, you just need to find payoffs somewhere. I think lottery payoffs in general aren't equal every time so I think it would be best to take averages for maybe 10 draws or so. For example, you want to know the payout for 4/6 hits in 6/49 lottery. Find 10 of these online and find the average payout and work with that.
As for the game you need to create, it's possible to create some kind of card game with a deck of 52 cards if that's allowed in your project? It should be since the title is "Chance of money making in different casino games". It could be some kind of simpler variant of blackjack game where a player gets dealt cards and has to chose whether to hit or stand. Otherwise, if lottery is the only available subject, it shouldn't be too hard to think of some kind of simple game.