As naafiri, In the late game, flank the enemy and stick near your teammates. You should look to go in with them in late-game team fights.

Continue to look for picks on the enemy Support as they go to ward alone in the late game. This is especially true when objectives are about to spawn.

Focus on team fighting with your allies, and avoid splitting up too much or else they’ll get collapsed on and you’ll lose the fight.
 As naafiri, At the end of the game, flank the enemy and stay close to your teammates. You should look to go with them in the team fights at the end of the game. Continue looking for picks on the enemy Support while they go to the room alone in the game at the end of the game. This is especially true when the goals are about to spawn. Focus on team fights with your allies, and avoid breaking up too much or they will collapse and you will lose the fight.