I think this should be in the other forum btw, but regarding fat the issue is never weight but rather your body fat percentage, biggest most important thing when it comes to losing the weight and fat is a caloric deficit, I'll do a quick breakdown for you.
Calorie Deficit = Weight Loss
More Calories Burned = Greater Caloric Deficit
Resistance Training (Weights/Calisthenics) = Hypertrophy (Strength and Size)
To ENSURE you are losing fat and NOT muscle, it is important to hit your protein, a good rule of thumb is 1g for every 1lb of your IDEAL bodyweight.
To ensure you are not losing strength while in a calorie deficit, you should be doing some form of resistance training at least three times a week.
So in conclusion go online and search up TDEE which is your total daily energy expenditure, once you have that number, a good rule of thumb is to decrease it by 400-500 calories, this should put you on track to lose 1lb a week, make sure you are eating 1g of protein for each 1lb of ideal bodyweight and make sure you are resistance training at least three times a week, cardio isn't too serious just make sure you are getting your steps in or playing like pickup basketball.
The best fitness regiment is the one you can stick to.
DO NOT do any extreme measures to try and get to your goals sooner, time will pass whether you want it to or not.
Take all my advice with a grain of salt and find a coach or trainer who is into fitness and get advice from them as they can check in with you.
Track your food on myfitnesspal so you know what you're eating, a good rule of thumb is nobody has ever gotten fat from eating fruits veggies and proteins, its everything else to watch out for, eat natural.
P.S: Don't worry about your looks at your age, you should be worried about your lifestyle because that is what will ultimately contribute to your looks especially through puberty, I was 5'6 260 at your age and am now 6'3 195, it all comes with patience and hardwork, you got this bro.
