How do I get rid of belly fat?

There's no targeted method. A sustained calorie deficit, reduced alcohol and refined carbohydrates, resistance training, adequate sleep, and stress management all reduce visceral fat. Visceral fat often responds relatively quickly to weight loss.

Visceral fat around the organs often responds well to overall weight loss and exercise. Subcutaneous fat at the waistline is usually the last to go.

Alcohol, poor sleep and chronic stress are disproportionately linked to abdominal fat, so those are worth addressing alongside diet.