I'm on a terrible streak now in that slot game with the bonus buys... Already 7 bonus buys and non of them has paid something bigger than x1. I don't know if it's my bad luck or in that's how the bonus buys work, but I'm afraid to chase my loss in that game, it has been really cruel to me.
That provider (Pregmatic) is like that with me, I mean is really hard to win in those games, i have more than 400 bets in Starlight without a single bonus. So, the RTP us just a joke for me.
At least, you are not alone. there are many people who are experiencing the same thing as you. To be honest, this game is very interesting, especially when Zeus's grandfather takes out his thunderbolt. boom, jackpot, you got maxwin. seems very easy, but believe me that you are not the only one who plays this game. so, you are betting with other gamblers to get lucky from this game.
I don't really care about the RTP problem, the most important thing is that I enjoy every game session.
the point is, don't push yourself too hard especially just to buy free spins. because, you and I are experiencing the same thing isn't it. no matter how many times you buy bonus purchases, if luck is not on your side. then the result is not what you expected. to be honest, I've gotten maxwin several times in this game even with low bets. but at least, it's pretty entertaining. What you need to remember, don't push yourself too hard or you can play other types of games if the Gate of Olympus game isn't good for you to play.