I have been exercising for weeks now but have seen any results. which exercises is best for losing belly fat? thanks in advance your answers

Go slowly.: Most weight loss occurs through dieting. Exercise helps maintain your weight loss. Try aerobic exercises such as brisk walking, jogging, elliptical trainer for about 20-30 minutes per day while avoiding refined carbohydrates and eating within your daily metabolic requirements based on the weight you wish to achieve ( go slowly. 10% body fat loss at a time if you are overweight is reasonable).