hi guys, i am having a great difficulty in ring, when the opponent comes in my direction i think what am did with fear, because he have more weigth than I, I 63KG, He 72kg, i began to walk to back, and my legs trembled
You're afraid, presumably, because you don't know what to do. Ask a trainer to show you how to move, how to defend, and how to use your jab to keep the opponent at bay. And maybe don't spar with someone 9kg heavier than you.