I don't go to the gym nor do I have a strict diet, but nevertheless I stay in shape by doing calisthenics which are very beneficial exercises for the body and health, since it is with your body weight, maybe you can start with that by mastering your body weight to Later, enter a gym with the basics resolved. I am not in favor of creatine or different mixtures to generate muscles. I suggest that if you are going to follow a diet, make it organic and not contain processed foods. Take care, see you at the tables.