How to lose fifty pounds in a month?

Tell me about myself. I don't eat any sugar food, any meat food, including eggs, milk, fish, shrimp and seafood, any food containing caffeine and preservatives, and any processed products sold outside. My diet for a month is tomatoes, lettuce, pure soybean milk, steamed potatoes with salt and pepper. I never eat after 6 o'clock every night. Drink water when you are hungry, and drink water around 8 o'clock every night. But it's a long distance, and it's at least 3 kilometers away. I started with 1 17 kg, and after 32 days it was 93.4 kg. I lost more than 40 kilograms, and I lost nearly 50 kilograms overall. But if I have no perseverance, I don't want to use it. The most important thing is to keep my mouth shut. I am currently 8 1.2 kg, with a target of 70 kg.