If you want to lose weight, you can drink green tea and juice with high fiber content every day. The blueberry fiber I drank at Ruizhutang tastes good. Watsons sells them. Besides, don't eat anything after 6 pm. If possible, it is best not to eat dinner or even drink less water.
PS: Blackcurrant has a laxative effect. If you eat it regularly, it will also have a little weight loss effect!
Lose weight slowly, don't use those extreme methods.