I was just recently asked the same question, because bonuses are really very attractive, but often they are hidden behind opaque conditions. Personally, I have developed a simple rule for myself: before registering, I always check not only the size of the welcome bonus, but also the conditions for withdrawing winnings. It happens that the bonus is huge, but it is almost impossible to win it back. If you are looking for proven options with generous bonuses and honest payouts, I advise you to take a look at this list – https://payid-gambler.net/best-payout-casinos/. It contains casinos with the best conditions for beginners.