How do I lose this stomach fat😭

How can I lose the gut? I’m tired of being uncomfortable, self conscious and always wearing a jacket. Ive been told calorie deficit +walking is the best. I’m on day 4 of the carnivore diet and my calories are about 600-800 a day and I walk 2/3 miles. My problem is I don’t eat a lot anyways, but when I do it’s junk food and a bunch of carbs because I don’t like a lot of meat.