It could be a daunting task to start with checking out what you can have and figure everything out, but if you break it down into simple steps then you'll have a better understanding of the foods you're able to eat and how you can get the right mix of each category every day.

Make lists

With single ingredients foods, you can make down a list of the foods that you can eat and break them down to six nutritional categories. If any nutrients are missing out due to your allergies, make a lit of the foods and supplements you can have to replace them.

Check packaging

Check for the ingredients listed down behind the packaging. The allergens could be highlighted which can help you.

Buy allergen-safe ingredients and meals

There are products in the market where allergen safe ingredients are used to make the products, you could find out these places near by to you by checking out the nearest stores.

Cook and bake at home

If you're hesitant to eat at a restaurant or to take away your food, you may feel more confident on cooking and baking your own dishes. Use the ingredients your familiarised with so that you're sure nothing will give you any reaction.

Sources: https://www.virtual-college.co.uk/resources/how-to-eat-a-balanced-diet-with-food-allergies#:~:text=Make%20lists,can%20consume%20to%20replace%20them.