I'm not sure the site would be a success, even if I did create dark mode, etc.
The game is too risky and the trust required is too high.
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Exactly. The risks of participating far exceed the potential reward.
On top of that, it lacks the entertainment aspect, that classic games with instant results have. Not only doesn't it stimulate dopamine release, but it's also probably more stressful having to check the results on regular basis for the game that could possibly go forever. Could be fun as a novelty for those who want to test it with small amounts, but not much more.
Better luck next time and try not to put fake info and AI-generated photos, instead of lending you credibility it drives people away. You're better off just staying anonymous.