How to market gambling besides the winning scene? They can't because that's what they are selling, the hope of getting rich.
Nothing honest in marketing, and even burgers are different. What you see isn't what you get.

If the viewers at least 18 years old, they should know this real-world situation and somewhat skeptical about the advertisement. Their naivety is their own fault. However, I agree if this streaming industry is not healthy. Therefore, streaming platforms will take action sooner or later to clean up the mess.