@munnyya What is sad is that you're caught in a cycle of 'deprivation' of no cooking education and no /little idea of nutrition.
Did your own parents not cook?
Did you not learn as a child?
Because this is how your own child is now being brought up.
Your toddler should be learning to cook alongside you.
They should be helping you chop vegetables and fruit (within safety limits of course and not sharp knives.)
They should be enjoying mixing and making things like simple soups or biscuits.
It's part of their learning and 'skills for life'.
Somehow, you've missed out on vital life skills - being able to cook a simple, cheap nutritious meal.
Your parents let you down, but now as an adult you can access everything online.
There are a handful of simple meals you should know how to cook all of which your child can eat with you.
A roast chicken dinner
Spag bol
A curry
A casserole
Fish cakes
A fish pie
Pasta bakes - like macaroni cheese, tuna, etc.
Vegetable risotto
Homemade soups
The idea that a child has to have 'child's food' in rubbish.