I always check for a license from reputable regulators, such as MGA or UKGC. This is a guarantee that the casino operates honestly. The second thing I look at is the security of payments. It is very convenient if the site supports popular payment methods, and also guarantees fast payouts. Recently I came across an excellent site where trusted casinos for Australia are collected. There are detailed pros and cons of each operator: https://fishandlemonade.com.au/safe-online-casinos/. I advise you to take a look - it will save a lot of time.

Always pay attention to the quality of the support service. If it works 24/7 and responds quickly, this is a big plus. It is also important to look at the bonuses. Some casinos lure you with huge offers, but hide high wagering requirements in the terms. It is better to choose those where the terms are transparent.