Some ranks may have a lot of players waiting but that does NOT mean that they are all online at the same time.  Your name will remain on the waiting list until you get to play.  Make sure when you are ready to play you are on tricks discord in your current rank room.  Mobalytics is a tool that trick uses to see your stats this will help him to see what you are doing and it also helps you to improve your game.  Good Luck and remember to have fun.