Always wait with engaging and dont play any offensive early because ahri is dependent on skills on lvl and ap, wait until lvl 6-9 with engaging, at lvl 6-9 you should also start roaming. Push up your lane and gank bot or top, go farm in jungle if u have time and health. As blue or purple team tribush ganks are good for botlane ganking

U have your ult for positioning, focus the squishy targets. W is a spam ability in teamfights because u cant aim or lock it on someone. If u cant get to the squishies focus the tanks with your true dmg Q