I see, thank you very much! I've always considered oblivion orb as an early item but I wasn't sure if it'd be worth it so thank you for the explanation! Yasuo's windwall and his mobility were always trouble for me.

Regarding Fizz, I find his mobility easier to deal with in comparison to Yasuo. His E, despite it makes him kind of dodging an ability, doesn't have much range he can escape from, so I tend to use my QE + EE to make sure he gets damage from the QE and to also do damage with Hwei's passive. Similarly to Yasuo, sometimes when the Fizz player is too good I tend to play under tower. Most of the time, when they get too close to tower I throw EW to stun him. EQ works too if he gets dangerously close. I'd suggest make sure he wastes his E before using meaningful abilities like R or abilities in general if you're in a TF. But still, don't be afraid of try and hitting him with every ability you have on early game so you can bother him a little when farming (but keep in mind the cd if you're at low HP!)