Not every gambling game can be patented I tried to Google some information but there are few keywords that can solve the queries
if this is online gaming or gambling it should have something that addresses the solution of specific technical problems
All applications that include technical aspects are patentable only if they are new and put forward an innovative solution/idea. This means that inventions that have to do with computer programs must have a technical character so they can be patented. If they are using technical means to address the solution of a specific technical problem, then these computer programs are considered patentable
There is a word of notice also
Word of Notice: Patents in the online gambling industry can be used to protect some elements. However, one of the main issues for the majority of developers is piracy and the fact that some other elements of their creations can be easily replicated without anyone facing any consequences. It is amazing how small changes in a handful of elements can allow a developer to use the same theme and features under a different name.
So with this they can replicated it without any legal issues.
More on this article
https://brela-tz.org/patents-in-the-casino-industry/Aside from that, to clarify also your questions not answered by online sources, you can visit or call your local Patent Office.
They can explain more of what to do specific with your case. But don't forget to contact a Patent Attorney from your area.
Yes, there is dedicated lawyer for that, so basically it is easy to communicate with them with what you want because that's their specialization.
If you are having difficulty in finding one, you can contact your local Patent Office and ask for assistance. Without a doubt, they have contacts for those lawyers.