Go Swimming

To be exact, I went to the swimming pool to learn how to swim. I have been there a couple of times, but I still have no idea how to control my breath or how to coordinate my arms and legs. I think it that it must be very funny amusing to watch watching me swim. I would hold a my breath, close my eyes, and dove dive into the water. I could use only only use the my arms or the legs to keep moving at the one breath. I tried to use both arms and legs at the same time, but It only turns turned out to be a disaster.
Yesterday, at the swimming pool, I stayed in the corner and swam in my funny way as usual. Then a little boy came up to me asking me if I wanted to learn how to swim. Maybe he just couldn’t stand the torture the sight of seeing me swimming like that. (Haha) He taught me how to perform the about breaststroke. I learnt about twenty minutes and the teacher seemed satisfied. It only took me about twenty minutes to learn how to swim before the teacher seemed satisfied. Then Afterwards he left me to practice by myself. It was really exhausted keep practicing the moves, but I believe it will pay back.  Practicing the moves was really exhausting, but I believe that it will pay off.

Your writing is really good, but I think that you are a little confused with the tenses and when to use them.

Go Swimming

To be exact, I went to the swimming pool to learn how to swim. I have been there a couple of times, but I still have no idea how to control breathing or coordinate my arms and legs. I think it must be very funny watching me swim. I would hold a breath, close my eyes, and dive into the water. I could use only the arms or the legs to keep moving at the one breath. I tried to use both arms and legs at the same time. It only turns out to be a disaster.
Yesterday, at the swimming pool, I stayed in the corner and swam in my funny way as usual. Then a little boy came up asking me if I wanted to learn how to swim. Maybe he just couldn’t stand the torture of seeing me swimming like that, haha. He taught me about the breaststroke. I learnt for about twenty minutes and the teacher seemed satisfied. Then he left me to practice by myself. It was really exhausting keep practicing the moves, but I believe it will pay back.

[Very good work.  You were exhausted, the swim was exhausting.]