Try not to eat snacks to lose weight!
You can eat oatmeal (which is sold in supermarkets and not expensive), which is low in calories, rich in dietary fiber and can supplement energy!
I suggest you buy 1 lemon, slice it, then soak it in water, drink lemonade when you are hungry, lose weight and whiten, and of course add VC. Stick to it and you will see the effect!