Looking at it Your website looks awful, it's a basic website that any apprentice programmer can design. I don't see any basis for me or someone to trust and invest thousands of dollars in your website. You should do better if you want anyone invest, think about how bad it is I could even design such a site within a day even though I'm not a designer
I remember creating an HTML website in high school for a TLE(Technology and Livelihood Education) project and it looks better than that and that was 10 years ago
But op, there's another important point to consider. Namely, even if your website looked great and worked smoothly, there are so many casinos appearing and disappearing every day that there's an extremely low chance of your casino not becoming one of those. I don't know the whole list of stuff required for a casino to succeed nowadays, but lots of money put into it is definitely one of those things. Good luck, op!