hello,i'm not English,but i play on s98. I have some questions.

where can I get low-refiniture? In the sage ninja battlefield I get only high-refiniture because I finish in the first 15th rank every time. But I need the low-refiniture. where can I get it? Should I get an other rank?(under 20th?) I don't want buy it with coupons or with ranked coins(1000 ranked coins for 5 refiniture is too much). I prefer use the ranked coins for get 5 hinata every day. I'm a f2p do i can't pay xD

and where can i get scroll mood?