someone please tell me where I'm going wrong

I viewed your food diary, and you are not eating enough. And the food you are eating is not good for you. You should be eating a more balanced diet. Whole grains, fruits, vegetables, and lean protein. I see that you are not having any of these.
I agree you should be able to treat yourself from time to time. Everything in moderation. But your diet is not a nutritious one.
I myself had to do some research online, and had to really teach myself on how to cook a more balanced meal.
Make sure that you are eating the correct amount of calories and nutrients to help you lose the weight.
I think you are just too concentrated on the number of daily calories. And if you are eating more fruits and veggies you will find that you will actually be able to eat more, than if you are eating things such as chocolate cake and white bread.
Good luck to you.