It is recommended to give priority to aerobic, but do anaerobic properly before aerobic, so that the fat reduction effect will be good.
Anaerobic dumbbells and unarmed exercises are the main methods, such as dumbbell lifting, bending lifting and sit-ups. Increase your muscle content appropriately, step by step.
Aerobic exercise includes treadmills, bicycles, elliptical machines, aerobics, etc. The key to aerobic is the heart rate, which is generally 130- 150 beats/min for 30-60 minutes. The fat burning effect is good, but attention should be paid to protecting the knee joint.
The most important thing is diet, reducing carbohydrate intake and balancing nutrition, but the total calories should be controlled in the deficit. It is appropriate to reduce the food intake by 400-600 calories without gaining weight. You can't lose weight too fast, otherwise your skin will relax, it will be difficult to recover, and your body will be unbearable. It is recommended to lose weight 1 kg a week.
You'd better find a fitness instructor or a coach to take you, and you should also strengthen your study in this area.