Annie with one of the simpest kit in mid lane and still the second highest winrate mid
Annie has been one of the highest winrate champion in mid for a long time. She is easy to play, easy to pick up even if you first time her. You probably say she has high winrate but low playrate because the players who play her are really good Annie mains. I can tell you this is not 100% becuase the only difference between a diamond Annie and a gold annie is their game knowledge and awareness. Annie has low playrate because she is the oldest champion with the oldest kit just like Garen. You don't see many gGaren mains so you shouldn't expect to see many Annie mains. I suggest Riot give annie a rework to make her a healthy champion. If not at least give her slight nerfs such as mana regen, mana refund from q or auto attack range. I don't really mind her doing so much burst damage but it is actually a torture when you play a short range champion against annie as she spams her abilities with low mana costs and long auto attack range. I even played against an Annie top main in a d2 elo game, I was playing Darius and I could only farm under tower, even so I get harassed by her even if I just go for melee minnions under tower.