My game is for 2 players only so it's harder to get ratings, but if you have a friend with you please try out my game, Wizards
Right now when most people are playing the games I only have 3 ratings.
You still have a good chance to reach the 10 ratings, but yeah local multiplayer games are tricky to rate.
If things don't improve enough by the second week, you can try removing the "please don't rate solo" warning. Unfortunately rating multiplayer games alone is a common thing in game jams, for practical reasons. It doesn't neessarily mean you'll get worse ratings though, see a successful example here.