How do I add WebGl/HTML5 to my site?

How do I add WebGl/HTML5 to my site? I coded a game with unity and would like to embed my game into my site. with unity you can export your game into WebGl/HTML5. I added the code on to my site but it never worked. I did not know what to do. I can only code in C# and not HTML5.

https://support.wix.com/en/article/adding-html-code
https://support.wix.com/en/article/embedding-custom-code-to-your-site
https://support.wix.com/en/article/guidelines-and-limitations-of-the-html-code-and-embed-a-site-elements

You could also try doing it through open Modal
https://www.wix.com/corvid/reference/wix-window.html#openModal

thank you