I think you need to optimise the site. I get a warning message when visiting - see attached screenshot.
I’m seeing that warning on lots of websites nowadays, even on my Mac Pro and it never actually causes a problem, so it’s possible Safari is going a bit over the top with their warnings. It loaded very quickly here.
Overall it looks like a nice effort, so I would only add: in bocca al lupo
No warning here (MBP).
Nice fun website, multo bene.