I was very dark when I was a child, and I was often laughed at in primary school, but now I have come back a lot for nothing through several years of hard work. My college classmates think I'm so white. I think we can do more maintenance, for example, remember to keep out the sun in summer, swimming can lose weight, but we should choose an indoor swimming pool, and the skin after swimming is very fragile and needs sun protection.
As for your figure, you can also change it. You should believe in yourself, eat as little as possible every day, skip dinner and remember to exercise more. If you exercise on an empty stomach, it's better, but it's not good for your stomach, but if you really want to be beautiful, you have to pay a little.
There are no ugly women but lazy women, which I always tell myself. Nobody is perfect. How many of those bright-eyed girls are born beautiful?
I can understand how you feel, because being laughed at is really hard. Even if you are thin and white, people with bad hearts will still find fault. Such people are really hateful and pathetic, and never consider other people's feelings.
I hope you can find your confidence and motivation and become beautiful again. Come on!