Little brother, really, losing weight is the most persistent thing. In the third year of high school, in order to learn to lose weight and shape, I suffered a lot and went on a diet. This is what I use, but it is not the one-sided meaning you know in daily life. Next, I'll tell you how: ask your family to help you prepare materials-onions, peppers, garlic and tomatoes, and then put them together to make soup every morning. You can't eat anything but soup for seven days. You can't eat anything on the first day, bananas on the second day, beef and fruit for the next five days, and you can do it repeatedly after seven days. Remember, if you can't carry it on the first day, you have to start over, otherwise it won't work!
That's how I stayed up for three months, and my figure became very good. Classmates say it looks like rain, hehe.
As for thighs, I'll tell you a shortcut, jogging. The premise is to prepare a pair of sweat-absorbent pants and then jog. Never use force, or it will be thicker.
Little brother, come on, lose weight or perseverance is the most important thing! Wish you success!