Unibet - Bluffing to make a bluff fold lol

Okay, so I got free $20 from Unibet at bankroll Mob. If I get 500 points within a month Ill get another $20. But to get 500 points I have to pay $250 in rake or play 500 $5 Sit and Gos which wont be easy. Anyway, I was playing a $5 Sit and go and I limped in small blind with 10 8. Flop came Q 6 7. I was thinking of betting on the flop but I don't have position so I checked. Blind blind min bets so I call cause I figure I have gut shot and 2 overs lol(I don't think he has a queen). Turn, I check and river I gave up and checked it. He bets 210 which was very weak so I couldn't help myself with a raise lol.