That does make things difficult. I have a passion for cooking food, and I have the time for it now that I quit Starbucks. But maybe you can consider doing a weekly meal prep. Pick one day to cook large batches of stuff to throw together. Follow recipes, and you can't really go wrong. The trick to following a recipe is in defining the terms. You have to know that a boil is not the same as a roiling boil, or that to stir and to fold mean almost the same thing, but with different methods. You can always google the terms to help you out. There's a youtube channel called Simnett Nutrition that has a few weekly meal prep how to videos.
Best of luck!