Persistence is really important, but we must eat less, eat low-calorie food, don't eat greasy food, don't eat before going to bed at eight o'clock in the evening, and mainly eat some fruits and vegetables. When people consume less energy than they consume, they can naturally lose fat. I suggest you start running and use my method to ensure that you can lose fat. The two most important points are 1: Eat less (watch your mouth) 2: Eat less.
Wish you success!