This is a well know problem. There has been no lack of players here telling the staff this yet nothing is changed. Lucky for f2p they put up Training Grounds on Friday, since you can't be kicked and have a pretty decent pool of players to fight compared to the Sage World matching. 1500 sun coins max from there is 10 advanced refines from the groceries shop, so you won't fall too far behind now for not getting top 3 in Sage.