What am I doing wrong?

Are you eating back half your exercise calories, and what do you have say in what's cooked for dinner?

I would like to add that you shouldn't be doing strength training every day, unless you are making sure you're alternating muscle groups: your muscles need time to heal and recuperate. And even with alternating muscle groups, it's good to take rest days, especially if you're new to strength training. Combined with how exhausted you are, I would recommend taking one rest day per week (no exercise at all) and see if that helps.

PS: body composition scales are unreliable, just weigh yourself and take measurements and pictures, those will give a better indication of your progress.

Hey, I'm sorry for my eventually bad english but it's not my mother language. And sorry if that's a long comment I really hope that you will read and I'm sure that will be helpful

I don't really think you are eating too much. I think that you can eat more in quantity if you start being smarter. I am a nutritionist and I often see that people's problem is that: they eat little but badly and exercise too much and that way they cant keep doing the diet for more than one mount and then they become desperate :'D It's not about the calories but the MACROS and the vitamins/minerals! then below I will list my general tips and advice to correct your meals. That's not medical advice because I should see your blood tests and hormonal analysis but I can swear to you that something will really change if you follow my advices. You should just change your nutritional habits FOR EVER. In the beginning it will be hard (I did that too when I was younger) but then you will never go back to your unhealthy habits. When I was little I was overweight and I always ate cheese, fried things...now my body got so used to a healthy diet, that I can't eat even a mouthful of fried or generally high-fat and processed foods, that makes me sick
General tips:
1) Stop intermittent fasting. It's not good if you are overweight and want to get lean, because you will need LOTS of energy (physical and mental) for that. It also doesnt basically work for everyone
2) You mostly eat processed foods. Stop eating protein bars, deli meats, protein drinks. A "beautiful body" derives primarily from good health. Good health is not just the sickness that you will develop when you will be old. It's also the energy (that's the key word!) that you have now. Processed foods are usually full of chemicals, refined sugars and salt, that aren't good for your methabolism (= convert food to energy and burn that!). EAT WHOLE FOODS!
Example of diet you may follow:
BREAKFAST: It's already quite good. I suggest to drink a large glass of water when you wake up better if with some lemon in it, it will help your body get rid of fat and bloating. I don't know what PB is but I would recommend: 1 Use protein low fat milk for the oatmeal like soy milk (without added sugars) to feel fuller all morning and dont eat too much "bad" fat 2 Dont eat too much fruit, like 60g banana and 70g of strawberries or raspberries would be perfect 3 Add 10g of dried fruit like almonds or hazelnut 4 Dosage for oatmeal: 70g oats
SNACK: one fresh fruit + 15g dried fruits
LUNCH: THATS BAAAD GIRL! The largest part of your meal should be made up of fresh vegetables, better if greens; cabbage is also reeeeally good for your health. If you don't like vegetables, you are not used to eat them, just go on the web and learn how to cook them with spices to make them yummy. If you want to eat meat, you should eat chicken or turkey (low fat meat), NEVER deli meat. I suggest you to avoid also cheese for a little bit of time; it's full of bad fats and doesnt help you with your goals; when you will get leaner and develop muscles, you can start to eat A LITTLE BIT of that again. Examples of lunch: a LARGE plate of vegetables + 120g chicken/200g legumes + 50/60g of whole/rye bread or 60g of brown rice + 1 tsp of olive oil to cook. If you have to eat outside you can cook in the morning and carry food with you in a box made for that
SNACK: 10g dark chocolate 85% + 125g yogurt low fat and no added sugars (better soy yogurt)
DINNER: if you want to eat what your family makes, make sure that you mostly take vegetables (that souldnt be cooked with oil, or cheese, or things like that), and protein (NOT cheese or deli meat) and a small portion of cereals. If your family isn't used to cook like that, just cook your stuff like: always LARGE plate of vegetables + 100g tofu or seitan, maybe cooked with some soy sauce and thurmeric (that's how i cook them to make them tasty) + 40g of whole bread or whole pasta + 1 tsp of olive oil to cook.
If you feel you need a dessert after dinner (not everyday) you can go for another yogurt like the ones I mentioned before, or warm up one cup of soy milk with some honey or stevia (NOT sugar) + eat ONE biscuit you like/10g of dark chocolate. Dont starve yourself! We are women I know sometimes we need a sweet hug :P

You can replace the protein portions that I suggested with: [(one time a week) 1 egg + 100g of egg whites only] or [(two times a week) 120g fish (NOT breaded fish or things like that. You should still see the form of the fish before you cook it :'D)]

That's a diet of almost 1700 kcal but as you see you would eat much more in quantity and variety than now.

Things that you shouldn't eat as "vegetables": potatoes (high in carbs, you can eat them sometimes instead of bread or rice), avocado (high in fat, you can eat 100g once a week).
Do not put too much salt, just try to put less and less everyday (but find the way to keep things tasty for you or you will binge).
You can freely add spices that are good for methabolism and maybe 2 tbsp of seeds like flax seeds or sunflower seeds.
DRINK WATER! At least one liter and a half.

Just start eating like that and you will see that your energy will boost and you will do your things better (and burn more calories). This also will help you develop muscles, to increase your methabolism. Muscles are heavier than fat, so, especially in the beginning, you shouldn't normally weight yourself. If you can't be patient to see results, just go to a doctor and measure your body fat percentage like one time a mounth. That will show your progress and maybe suggest you that you have to exercize more (more weight lifting/free weight to increase muscle mass!). Of course when you will get leaner and develop muscles, you will need to increase your portions. Just listen to your body for that. I'm just a little taller than you and now I can eat about 2100/2300 kcal a day. It took me two years of workout and healthy diet to get here but now I'm happy and full of energy. We can all do that!

A HUGE HUG AND I WISH YOU ALL THE BEST FOR YOUR MIND AND BODY

I've read that "calories burned through exercise" is usually a very dubious measurement. There are too many variables to arrive at an accurate number without elaborate personal evaluation, the kind of evaluation that people like us as opposed to Jennifer Anniston can't afford. I think it's better to rely on a calorie level based on age and current weight for weight loss purposes and on exercise for general health and strength. Pretend NO calories are burned with exercise.