Training my kitten to walk in Just Life

I am trying to train my cat to walk on a leash. Sometimes if he hears a loud noise he will sit down and flatten himself to the ground trying to hide. I am sorry if I got to run and pick him up and carry him out of the way. Cinder has only been training to walk on the leash just this year. He sees road as a place to walk and grass is a place to hunt and his playground. He is sometimes stubborn but he is beautiful and smart. Please excuse if he hears a loud noise and freezes. He is still trying to figure out how to walk on a leash and how to be a cat. I want him safe and that is why I am training Cinder to walk on a leash. Please excuse me I am still trying..