Thank you. Low-carb is typically a long-term process, which includes keto and Atkins. You're relying on changes to your body that come from eating a small amount of carbs to help you lose more weight than usual. But since it can take several days or over a week for those changes to happen, you can't just go back and forth from low-carb to high-carb. Those who do cheat days would usually only do that around once a month on these diets.
Many start low-carb at 20g of carbohydrates a day which can feel quite extreme as it really limits food choices. After a while, some people like myself can increase those limits. I'm now allowing myself 40g a day and it's enjoyable. I have substitutes for many foods that are low-carb-friendly such as bread, cereal, milk and chocolate.
I'd probably recommend the diet to those who have struggled with different dieting beforehand, and most of all to those who are at a higher weight. I've tried various diets over the years and none of it worked until I started doing low-carb while giving myself more freedom.