Carbohydrates are a nonessential macronutrient. Problem is the standard American diet is outrageously high in carbs, and eating keto feels like punishment because everyone else in America is getting fatter by maxing on carbs every time they eat/drink.
It's all mental. The body will do what the mind tells it to. You can do it if you want to. A victim mentality will just enable you to stay overweight.
Sorry to rant, but I have very strong feelings on this. I've been there and still struggle with my fatness. I teach high school kids and most can't go 20 minutes without juice/chips/candy. I can't deal with victim mentality.