The funny aspect of this is that you will hardly see this forum being advertised on any social media platform but yet it's ever relevant and well recognized globally, but through the use of the search engine as you've mentioned, one can see this platform as one of the recommendation given on articles or threads created about gambling on the forum, but for the sake of those already on the forum, they have the upper edge to utilize every opportunities found with the gambling sites present on this forum.
And on that search engine, gambling ads sometimes appear because I saw them when looking for something related to gambling. And it seems like Google or other search engines should provide stricter filters so that gambling ad results don't show up to people looking for information that isn't related to gambling.
And what's important is that when they can be on this forum, they will get many recommendations for gambling sites trusted by members here. It will help those people not to get scammed by scam casinos.
When you search for something, an ad on the same category will also appear. On social media sites or other places any random ad can appear including gambling even if we don't have an interest with them. If that can happen on them then why not in Google? but we can do something to stop these ads from appearing.
It's either we pay from a premium subscription or use an adblocker in our browsers. Google can't do much about them because they are also earning with it. In our browser settings there is also a feature called strict filters. This mainly works in explicit contents or something sexual but it might help to restrict gambling-related stuffs too.