If you go to the gym to "carry more loads and less times", then you exercise muscles, but you don't lose fat, so you will gain weight.

I suggest you practice "small weight and multiple times" to lose fat, and at the same time you can gain a little muscle, which will make your weight lighter and lighter. In addition, aerobic exercise such as jogging is the best way to lose weight and fat.

I hope my answer is helpful to you!