All casino games give the casino a certain statistical advantage (house edge), so you are more likely to lose money than to win. However, if you think that casinos manipulate games to give them an even bigger advantage than the advertised house edge, that’s not the case. Casino games are operated by the company which created them, not by the casino itself, so the casino can’t influence the outcome of game rounds at all.
The only exception to this are fake games, which are created to resemble other original games, but with a different set of payouts and probabilities. Fake games are generally used by dishonest online casinos to trick players and increase their profits, but you will not find them at any casino which has a good rating from us. If we discover fake games at a casino during the review process, we decrease the casino’s rating and warn our visitors.