Actually it's a pity that you sold it, as far as I can see everything looks good and not too bad this site even seems to be able to attract gamblers to try the game, it's true that every gambling platform needs something called marketing so it's hard to be known let alone get active users on this site . Domain names are also quite selling.
But it all comes back from your decision, you should be able to invite investors to fund your project from this forum so that you can carry out large-scale marketing to get lots of users to try gambling platforms such as roulette games on your site, I am not a roulette game lover but in my opinion personally very unfortunate if you sell it. think again before deciding to sell it