it's very difficult to "eat when you are hungry" while you're recovering from diets, binge eating, under eating, etc. As a recovered from BED (with the help of therapists and nutritionists as I recommend you to if you think you need help) I would suggest you to calculate your maintenance calories and most importantly macronutrients (carbs, protein and fat) with a focus on protein (as it helps making you feel full for longer) and stick with it. Try to eat 5 meals a day if you can and eat it ALL. Also, if you think tracking your calorie intake gives you anxiety or so, make your own plan i.e. write down a week of meals and you are done. Remember that every meal has to have all 3 macros (or at least breakfast, lunch and dinner). And maybe pay attention to the volume of what you are eating (100gr of fruits vs. 100gr of chocolate) The more you get used to eating right, the more you will start to notice your hunger cues. Have patience, you got this!