there are many ways to find out if the casino is a scam or not and it is more effective if you use a small deposit method and try several bets and try to withdraw funds and do it several times. because usually the first withdrawal is successful it can be just bait to deposit even more funds.
only it's a more effective way than reading reviews alone, because many fake positive reviews are published on several sites and pay for each positive review.
doing your own research is much better.
Why should we go too far? We already have our beloved forum which is composed of real people who are honest at giving their opinions and reviews about the gambling sites that they tested.
As gamblers, we try to avoid adding more risks because out money is already in jeopardy by betting at a game where "the house always wins" and if it's a scam, it's double the risk. I think we should just stick with the reputable ones, let's forget about looking for something new and just used those who are competing at a high level like Stake.com and Sportsbet.io. That's already two options for me and there are more in this forum. I don't even need Google anymore to find another trusted gambling site.
Practically speaking if you don't want to add more risk with your bankroll taking those reputable site to play is the best thing to do, but if you are a fan of exploring around and you wanted to test other alternative options by using a small amount of funds, you'll be able to test those services and your personal experienced can guide you if the option to use new or not so known casino are okay or you'll stay with the site that you already play comfortably and the experienced is just nothing to change your site where you are already comfortable to play in.
Keep in mind that is money matters so better to make sure that you are using good platform to entrust your money.