I weighed myself yesterday for the first time after four days on the diet hoping to see some difference and to my surprise I gained 400 gm

And I was so frustrated and annoyed that I had a coffee with sugar and had a chocolate and then hated myself for it.
It is just very disappointing to hear that everybody loses weight in the induction quickly and I gain!

Could it be that this diet is not for me? Am I doomed to lose weight only with starvation?
I am confused. I spent so much time down the gym lifting weights and doing cardio
I don't know what to do now.
Is this normal to gain weight in your induction?
Here is an example of my daily eating plan so that you can tell me what I did wrong.
Breakfast
Cheese and salami
Lunch
Omelette with double cream, cheese, bacon, two slices of pepper and one mushroom
Dinner
Burgers with cheese on top and small salad with lettuce, onion, pepper and garlic dressing
Snack: salami, cheese
Looots of water and some chewing gum
What do you think??