Back for advice again

Okay folks, I picked up Yurie. Been doing pretty okay, but I just got obliterated by a Boris. Badly. Is this just a terrible matchup? Or is there a way to build her to sustain the insane damage output he has right now? He literally was melting me before he even had an item built, and it felt like I was throwing rocks. So sustain? I can destroy him any day with serath, that’s a given. But yeah, trying to expand my pallet.