A start! As is, it's sort of just a slot machine, without much feedback. As others have said, the only decision you really make is how much money you bet, and it's not to any particular end. Perhaps you could challenge the player to reach a certain goal within a certain amount of bets (thus making that decision more interesting and incentivising taking risks). Sometimes even just improving the feedback the game gives you can add to the experience. The music is a nice background, but stuff like sfx for dice rolling, having the dice roll across the screen, having a character that reacts to the rolls, having actual trophy items to win, having moving parts in the background, using font effects and animations to emphasise the action -- that sort of stuff can elevate even a bland gameplay loop to something that's more engaging to interact with. (In fact, that's basically what real slot machines do! The flashing lights and moving parts distract you form the fact you're really just pulling a lever.)

Alas, as others have said, ideally though there'd be a little more to it than just RNG on a scrolling text box. If it's one of your first games though, it's a start! And having made something is always better than having made nothing. Hope you keep making games or find an interesting angle to build on this from!

Artwork is great, but sad that there is no decisions in the game

Not really that fun, RNG can be a fun core mechanic when you have some control over it but this just felt like flipping a coin over and over again. Music and art were good though!