It looks like they have a provably fair section. Can you get some of those bets, their details, and put it through a check? This skepticism is because recently, a lot of "loss streak" threads have started popping up and we want to make sure that you are making a genuine scam accusation rather than a typical gambling loss ragepost.
Surely this is not the case, right?
https://www.casinonewsdaily.com/2020/03/12/wixiplay-provably-unfair-gambling-practices-at-anonymous-online-casino/ and plenty of other sites have proved some casinos can manipulate "randomness". However, this takes unfair to a whole new level.