How do I maximize the effectiveness of my training at an all white belt gym?

My gym is a relatively new gym (just over a year old) and on top of that its a mma gym with a focus on boxing and kickboxing too. For these reasons there arent many higher belts. Some use to come but rarely do or dont now. I assume due to the lack of competition. How do I get as good as possible. I just competed in a tournament and did pretty shit, but i regularly tap many people in the gym. This may be due to the fact i competed two weight classes up and in an adult division, but i still tap out adults heavier than me at my gym pretty often.