I also wonder why the given satoshi were reduce. So thats how it is we need to wager more to get increase in sats.
That's how it works, in order for the site to reduce the amount of abusers and remain sustainable

Alternatively you can always redeem your Reward Points for hourly boosts up to 1000%.
I always use my RP for boost but seems like i am not in a luck team because i keep losing a chance .
and even my deposits are keep on losing.
It happens, gambling in a nutshell

You could try relying on referrals that can earn for you. That's gonna take some effort though.