Bro if you are 15% body fat your need to do cutting

I suggest ;
Test E 300mg week
Masteron E 600mg week
Winstrol oral 50mg day ( you can use anavar )
T3 50mcg day ( to burn fat)
clenbuterol 80mcg day ( to burn fat)
Arimidex 1mg day

Cardio fasted 30min every day

Diet carbs only before and after training 200gr sweet potato before training and again after training ( you are eating to much carbs and will never lose fat )

If you can post your before and after when you end this protocol