I get burnt out one-tricking
For the most part I have always one tricked Wukong. I have climbed as far as to plat promos using Wukong. When I get burnt out, usually after a few unlucky games in a row, I think about playing other champions in other roles... The thing is that even though I can play at the high gold / low plat level with Wukong, I am a bronze player with other champions. This isn't really the issue though, the issue is I do not find other champions appealing to play. I just don't have fun putting in the work to learn other champions after I have struggled so much to do so with Wukong over 3 years. I have been playing different champions in ranked to try to force myself to do well, but I just feel disinterested in those champions. I don't know if it is just me, but it kind of sucks to be a one trick to this extent.
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but occasionally, I swap over to see how other Assassins play. Find champs that have similar playstyles to Wukong, or are in the same class as him.