Or eat two meals a day, brunch and lunch, and change to fruit for dinner. Although this method works, you must accept it as soon as you see the effect (if your body shape has reached your expected goal). The rest of the time is to pay attention to diet and not eat greasy things.
I'll teach you the hardest trick, don't eat meat, eat seven full meals a day (don't eat anything after 8 pm, never eat). It won't be long before you lose weight. But this method is recommended for obese people. If you want to keep fit, you don't have to work so hard.
Finally, I wish you success!