There are many themes where custom post URL rewriting is not possible or even very difficult to do. But in our theme, you can easily rewrite the URL without any complexity or without touching the code.
So, navigate to the Theme Options from your WordPress Dashboard —> Rewrite URL. There you’ll find Casinos URL, Casinos Category URL, Casinos Tags, Game URL, Game Category URL, Game Tags, Coupons Brand URL, and Coupons Category URL with their respective boxes. So, make the customize as you want.