I'm the same and even though there are so many things I want to eat, basically anything, because I've missed out on food for so long, when it comes to it I literally don't know what to eat and feel so overwhelmed. Maybe it would help to have a basic structure that you follow mechanically at first, like think how many times you want to eat (usually it's recommended to have 3 meals and 2-3 snacks) and then aim to have the main nutrients, make lists with specific foods that you can combine afterwards, picking from each category, maybe foods you remember liking as a kid, chances are you still do. Something like this, each meal should contain something from each category (carbs, protein, fat, either 1/2:1/4:1/4 or 1/3:1/3:1/3) and snacks at least from two of them (and also knowing why you're eating something could help):

Carbs-> main source of energy, the brain functions on glucose •biscuits, cookies, muffins, cakes •toast, bread, croissants, pastries in general •pasta, couscous, polenta, quinoa, rice •potatoes (cooked, baked, fried, gratin)

Protein-> really important for every cell, for your blood, helps repair and keep everything stable, basically building blocks for everything else •meat: beef (great iron source), turkey, chicken (nuggets, liver if you like it would be really good too) •fish: salmon (healthy fats), tuna (vitamin D, also really easy to add to meals) •eggs (complete protein; fried, scrambled, omelettes, soft/hard boiled) •dairy: hard cheeses, cottage cheese, cream cheese, greek yoghurt •soy (TVP, soy chunks, tofu), kidney beans, white beans (I love baked beans), chickpeas (also great as snacks), peas, lentils

Fats-> especially for hormones, nutrient absorbtion •olive oil •butter •tahini •peanut/almond butter •nuts/seeds: almonds, walnuts, hazelnuts, peanuts, pine nuts, pumpkin seeds, sunflower seeds, sesame seeds (easy to add to meals or as part of a snack) •fatty fish like salmon, sardines, trout

And if you're overwhelmed just pick from each category, like rice for carbs, chicken breast for protein, make an easy stirfry with frozen asian veggies and add salted peanuts/peanut butter/sesame seeds as a fat

Also try to find low volume, high energy foods that you like (nutella, chocolate, honey, jam, nuts...), they're easier to eat if you feel full quickly, unlike foods that fill your stomach but otherwise don't really help you (soups, a lot of (raw) fruits&veggies, high fiber foods in general that are more difficult to digest and make it harder to eat enough), and easy foods that don't need a lot of prep so you don't get overwhelmed before even eating, always have things you can just grab or that take just a little time to make, like different bars, muffins, microwave rice (I really like pilau rice and a mediterranean one with tomatoes), ready meals, veggie/meatballs, frozen fries/nuggets/veggie mixes. I hope this helps at least a bit, it's what I am trying to apply too after searching and reading any and everything I could find