What (unfortunately) many people do not understand, is that all restircted niches, including gambling / casino niches, to run in Google Ads, often (most cases) requires an effectively cloaked campaign to be run.
Exception to running a cloaked campaign, is when one has relevant legit business docs and submits these to Google Ads and gets a special approval by Google Ads to run gambling / casino campaigns in Google Ads. Otherwise, the way to run gambling / casino campaigns in Google Ads, is through an effectively cloaked campaign, which no one can explain in just a few paragraphs, because each and every effectively cloaked campaign is different, with different strategies, different keywords, different landing pages & different everything.
However, following is an indicator (or a roadmap) :-
1) Based on the exact affilate (gambling) offer, do your "effective" research on what white keywords to "effectively" use.
2) Create a safe landing page as per the white keywords.
3) Create the money page based on the exact affilate (gambling) offer
4) Get your cloaker ready
5) Create your effective Google Ads campaign as per the white keywords and as per the safe landing page
6) Once the Google Ads campaign is live, then activate / enable the cloaker
7) Pray that Google Ads algorithms do not detect the cloaking, too fast, hence, also praying that your campaign survives for atleast a few weeks.
Sooner or later, the Google Ads account would get suspended and then move on to the next Google Ads account.
ADDITIONAL TIP : If you are a newbie to Google Ads and straightaway dreaming of running a gambling offer / ad campaign (cloaked), (after getting "motivated" by some YouTube "guru"), then it is better to wake up and come to reality and first run ad campaigns that are allowed (NOT restricted) and get a grasp of Google Ads and after you have a grasp of Google Ads, only then should you attempt to run blackhat cloaked campaigns.