I started out with Rival casinos the same way like you feel now P2008. I stop for awhile and deposited again, play small and find games that you like and hitting of course. Started winning and now I like their slots more than any other software slots. Beginning of May, I won from 6 different casinos, average $500 each. Then started losing and got no promotions. This weekend, Deposited to Superior twice on $50 deposit, won $300 and $400. Deposited to Slottocash $75, won $1000. Then deposited to Slottocash again, total $250 on 3 deposits, lost all.
I suggest you bet small and keep changing games, you will hit big sometimes. Games I love the most is Cosmic quest 1, watch for the rockets launch during free spins, I had 3 rockets launched during free spins and that spin gave me $800.
I have never had any luck at RIval casinos. I stopped depositing a while ago. Unless they have a really good bonus offer, I stay away from them, as I just couldnt win, and I went thru my deposits so fast I didnt even get to enjoy any entertainment value for my buck.