Those that keep their gambling habit a secret is it that they're not proud of what they are doing?.
I invest in crypto in secret, does that already mean I'm not proud of doing it? Answer: No!
It's hard to show people a habit of yours where they will 1st think that it is a bad thing. I don't see anything wrong with people gambling if they just do it with their spare money and not expecting some returns. I love gacha games which has a gambling aspect but I always maintain a budget to it and not go overextend to the point that I will have to use the money that is for the monthly expenses.