Here is a revision of my rewrite. (It's more consistently in the present tense.)
A turtle, a snail and a tiger have been friends for a long time. However, the turtle and the snail always follow the tiger. Fed up with collecting the wooden spoon , the slow friends make a decision to overcome the tiger at least once, then they can carry the golden medals on their backs. They can't defeat the tiger, and the tiger wins as usual. They will have to follow him and resume their usual roles. Turtles and snails have always been losers; on the other hand, tigers are always winners. It might seem unfair that their positions can't be reversed, but in this case we have to face reality. Dreams are dreams, but we have to face reality in the end. Snails can never become tigers.