Master yi problems

I have played {{champion:11}} for several months and have been frustrated because I get shut down if the other team picks any champ with heavy stuns({{champion:24}} is the worst but there are several). Is there anything I can do to help with this, or should I go with another champ, If anyone has a recommendation I would appreciate it. PS. this is my first post ever, so If I made any mistakes please don't hold it against me.
Best New

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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