As you play shooting games, you click your mouse just as quickly as anyone else. If your mouse clicking speed is more than others then you will be able to perform better. You will enjoy playing the game with your friends. Earlier my clicking speed was also low, then I used a tool and practiced daily. Day by day, my speed increased and I started performing better than my friends. If you also want to play better than your friends, So you have to practice daily. I am sure that your speed will also increase like mine.