For online slots regulated by gaming commissions, the results are linked to a central system that tracks the game's payout and win rate. This ensures that the reported Return to Player (RTP) percentages are accurate. Other online slots are regularly checked and audited by licensing boards to ensure fairness.
In order to bring the lawsuit, you need evidence of what happened, and you need to look at the TOS. Some of these companies are hard to sue because they're outside of the US. But you can try. What some of the lawyers have been doing is suing Google and Apple if the games require apps downloaded from their stores.
