The Drinking Man's Diet was an early low carb diet that recommended about 60g carbs. Sugar, bread, rice, starchy carbs etc were not allowed so most of your carbs come from fiber rich vegetables, e.g. spinach, broccoli, Brussels sprouts, endive, etc. and fruits like berries. A good chart of LC vegetables: https://www.dietdoctor.com/low-carb/vegetables. Now you can easily see how much fiber you are eating by using a food tracker app.
Welcome, look around the sub-forums to read other newer suggestions for low carb diets.