How do you deal with low appetite and not having cravings?

The question is weird but let me explain.
I've been making better nutritional choices this last month. So now and I've been tracking my macros and doing my best to stick to a weekly deficit.

How do you mentally pass this stage of not craving anything anymore?
My question may seem weird but, really it's as if my brain isn't understanding the changes happening. Also, because I've always had the habit of eating junk food on the weekends, I feel like something is missing for it to feel complete. I feel like I should force myself or I'll fall off the wagon.

Has anyone lived this already?

And how do you end a week where you're in deficit?

I'm on a daily 1499 calorie deficit and this week due to low appetite I'm missing 5423 calories to reach my weekly goal (note : I did a bit of sports this week so the missing calories are correct)

Anyhow, Is it possible to eat all this in two days and lose body fat, I'm scared I'll retain everything.

Thanks for any helpful answers !
How do you deal with low appetite and not having cravings?
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