As you've discovered, NOBODY is paying you big money just to play games or watch videos. Feel free to play those games if you find them fun (some people do) but do not play them expecting to ever get paid. That way, Google becomes aware of them and can work on removing them from the Play Store.

No Guarantees!\n\n Another reason I cannot call Spin for Cash a scam is because their Terms of Service doesn't make any promises. They can determine the availability and exchange rate for coins. They can ban you from using the service and cancel your rewards at their sole discretion. Tokens and coins are not actual money.