How is this only a B+?

94 cs

that's a normal score with bad Cs for yasuo, we also cant see how long the match is, if that is above 20 min and that is your farm... thats sad..

u have no mana to speak of.. and u have a shield to allowed u to safely CS for free, u should have no trouble get CS, u also have very few assists

we also cant see your warding score and lots of other important data that changes how u are graded.

like i haven't been able to get an S+ on my main since they deleted trackers knife. because i cant fucking ward enough without it, and i also cant clear their wards

{quoted}

I was all over the map, getting kills and objectives

This mean losing CS ... CS is the thing that weight the most on the overall score