I mean think about it kids on a wrestling team train 2 hours a day for practice some year round not only are they younger and their bodies can better learn mechanics but they also put in so much more time than an adult you will never catch up at your age. Kids start grappling before puberty they are black belts by 15. You could train BJj the rear of your life and I could never step on a mat again you still would have 0 chance of ever out grappling me