How Can a Teen Gy Get SLimmer fasT?

I'm a 16 year old guy. 5'10, and roughly 165 lbs.I just have some lower belly fat, love handles, and some bum fat. I don't have a lot of fat, but it's still there. I think I mainly need to tone up, but I do not know what to do! I am currently playing soccer 3 times a week. I have dumbbells at home as well. So, what should I do at home in order to tone up and get leaner ASAP. Also, will squats make my bum bigger, or tone it down and make it smaller? I really want to do this, also what about my diet? Thanks