The reason why the weight has not changed after fitness may be that the muscle weight has increased and the fat weight has decreased. This situation does not mean that you have failed to lose fat, but that you have successfully lost fat and gained muscle. It is very beneficial to health, and then continue to lose fat and reduce the probability of weight gain.
In addition, if your eating habits haven't changed, then you may not lose weight. If you want to lose weight, I suggest you control your diet and do proper aerobic exercise.