Olaf vs Yorick

How do you play it as Olaf? I had no idea what to do. I tried to drop the agro of his pets but he would walk into the bush with me so it wouldn't work. I had to just run from them and ended up shoved in past the bushes as a result. Yorick was harassing me nonstop so i built a vampsceter and put points in w to sustain. That wasnt enough so I built defense. Yorick wasn't getting autoes in on me and i wasnt sure if his spells did more physical or magic dmg so defensively i stacked hp. He would eventually go oom and i would pressure him win a trade and he would go b but he every time he was able to return immediately with tp and eventualy between tear and iceborn he seemed to have endless mana. He got tower right before 16min and then died a couple times but even with only a 20 cs lead he always seemed stronger than me.

The only mistakes i know i made is i went to finish spirit visage 1st because once items that do more than give mana come into play his autoes do more than his spells. I could have csed better but i was trying to lifesteal under turret a bunch. It wasn't 143 in 32 min bad until i got no cs for like the last 10 min but it was still sub par.

Looking at the rest of the game it seems like the whole thing was pretty unwinnable but Id still like to know how to do better against yorick because if i can't be at least a minor positive impact on the game i can't really expect to win.