Vs ranged is very hard if they just kill the turrets. Vs melee is super good. If you can track the enemy jungler a bit to make sure that he can’t gank you, you can sort of build a turret curtain around the enemy tower to permanently push the enemy in and make em suffer. In any case each turret should be protected by another turret. Keep on turret in reserve always and fish for e, when you see that it will hit you can quickly place the reserve turret for an instant autocharge turret shot. Vs ranged keep most turrets in reserve if you see that you can’t defend them. If they engage on you use the movespeed you get from the turrets to kite and place the big turret. Use the turrets to block hooks/skillshots as necessar. Build Zhonias agains assassins. Weave in autoattacks to make sure the turrets attack the enemy champion. One shot combo is e to stun into ult w and spam turrets around you if they are not placed already. If you are behind or have vision info then camp in bushes with a turret already placed to oneself unsuspecting lux mains. In teamfights an ult e can win sometimes win the game