I don't usually answer questions about losing weight now, because there are so many well-written answers in Zhihu. Losing weight is not a personal matter. As long as everyone persists in science and perseverance, there is no one who can't lose weight.
My own area of concern is "how to become strong and healthy". So I'm not going to answer your question about losing weight in detail, because there are only three secrets: eat, exercise and sleep well.