I personally don’t count anymore as I want this to be as easy and sustainable as possible. I have had years of counting calories and points, and this is incredibly liberating. I just don’t eat any sugars, grains or high carb foods any more so I am incredibly low carb all the time. When I was starting out I counted, just to see where my carbs were coming from and it was an eye opener. And yes you are correct, to go into ketosis anywhere between 20-50g carbs/day. Find out what works for you.
Use fat as a lever. We’ve been taught to fear fat, but don’t! Both keto and low carb are high fat diets. Fat is our source of energy as well as satiety. The key to understand, though, is that fat is a lever on a low carb or keto diet. Carbs and protein stay constant, and fat is the one you increase or decrease (push the lever up or down) to gain or lose weight, respectively. So if your goal is weight loss, eat enough fat to be satisfied, but there’s no need to “get your fats in” once you’re satisfied.