Give your body time to adapt to fasting and under eating during the day. This adaptation process may take a few days or a couple weeks. The best part about this diet is that while you might feel slight hunger sensations at times there will be no junk/food cravings. Many people including myself find it easier to deal with a little intermittent hunger then to deal with sneaky food cravings. As well everyday you get to look forward to eating a very big and satisfying meal at night. This takes the grind out of dieting.
While macros will differ a little from person to person, the general rule of thumb for keto is to keep carbohydrates under 5% of your daily caloric intake. As long as you avoid the foods mentioned above, you should be fine. Google “TDEE calculator” if you need some additional guidance on how many calories to eat. I’ve had success following this way of eating as it allows me to eat foods that taste great. There are tons of resources online as well if you need additional guidance. A quick google search should turn up a ton of resources. Hope this helps!