Congratulations on your “base” winnings. Well though you have won basic rewards I believe it’d still good. If you keep collecting RP like this then it will ultimately be converted into satoshi once you reach minimum conversion amount. So be positive about it.
In addition to this, keep betting this will increase both, your % in free roll base reward which can go upto 190 satoshi per free roll. Plus you get cashback though its small its something.
So just keep rolling.
In order to reach 190 satoshi per free roll, you already need to wager quite a lot and with the house edge, you will always loose money. You also get RP that compensates its a bit and based on the premium membership also a small cashback, but it doesn't add to the risk in my eyes.
Don't forget that bonuses are regularly offered at the multiply btc game, and CMIIW it divides by 2 the HE when you take them if you are a regular gambler because the balance used to gamble is freely doubled.
Moreover you forgot to take into account the lottery tickets earned.