Please recommend me fun champions.

My Mains: {{champion:51}} {{champion:69}} {{champion:28}} {{champion:420}} {{champion:40}} {{champion:222}} {{champion:429}} {{champion:55}} {{champion:7}} {{champion:127}} {{champion:21}} {{champion:25}} {{champion:76}} {{champion:113}} {{champion:15}} {{champion:37}} {{champion:16}} {{champion:134}} {{champion:143}} Mid is the only role that I can have been playing right now because I only play {{champion:7}} and {{champion:55}} I get bored really easily, put myself on tilt and lose a lot. Used to be quite good but now I'm garbage at these champs. Can anyone recommenced me some good champs to play? I need things that are exciting! I get bored easily and need something to keep me entertained but also something that will let me develop as a player. Also the lane doesn't matter I will gladly go other lanes to have more fun.
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