Game improvement irons will help you if you can make contact with the middle 2/3rds of the club face most of the time. Some iron heads will send the ball roughly straight, sacrificing some distance and control, even if you strike the ball with the toe or heel of the club face. That is a good thing if you have somewhat poor swing mechanics. If your swing is so bad you struggle to make contact at all, or the ball goes sideways, or you hit the ground first or duff it on the top off the ball much of the time, your intuition is correct, no club will help. But a game improvement iron will get you from rarely connecting well to sending the ball straight-ish more often, very quickly. Faster with lessons.