Mainly eat less, on the basis of ensuring three meals a day, don't eat any snacks, quit midnight snack, eat a fruit half an hour after meals until you are half full (this process will be very painful, but you should stick to it), go to bed early, and exercise less (few people suggest this, because you look strong and try to reduce the living habits of athletes), but you can't always sit, your stomach will grow fat, and you can stroll around when you are free.
Proper stretching can accelerate weight loss. I suggest you learn yoga or ballet. I'm not kidding. The posture of ballet is very good for shaping a tall and straight figure, improving one's temperament and maintaining a good posture. Even if you are a little fat, you will look good.