Okay, I need some help
I play support. As support, Fizz is my least favourite champion. Why? Because when Fizz is in the game, there is nothing I can do to affect him. I cannot land cc unless he makes a mistake, and I can't consistently land poke. Once he's at my adc, it's too late for me to apply any cc. If I'm playing a tanky support, I can block his fish, but that's it.
This isn't to say I think he's overpowered - I can sometimes protect my adc from his burst long enough for my teammates to kill Fizz by directly shielding them. I don't think that I lose against Fizz more often than not. I also realize that he can have a difficult time farming, but that's not relevant because I never lane against him.
The champions I frequently play:
The most frustrating matchup, as Leona's E doesn't function as expected against Fizz. If Fizz is the last champion hit and he uses his pole, the dash does not trigger. I'm of the opinion that this should be changed. For comparison, Leona still dashes if she hits Vlad and he pools. Her ult is difficult to land against Fizz because of his multiple dashes.
Skillshots are not great against Fizz - I don't expect either of these to be good matchups.
His ult is worthless against Fizz, unless I blow everything to hit him. But by the time that I do, it's usually too late to prevent him from dropping all of his damage.
No cc other than her unreliable ult (because a decent Fizz will react fast enough)
What is there that I can do in the 40% of games that I'm not banning?
works well against most of the really annoying champions. For the Support Role, she is a heavy poker with a single snare, but her ultimate combined with a plant or three can swing any fight.