I don't think I've ever ordered delivery in my life...
Same here. I've done takeout a handful of times over the years, but it's always felt weird. If I'm shelling out for restaurant food, and driving to a restaurant, I don't want to have to clean up or do dishes, dammit.
OP, just keep some bone-in chicken thighs in your fridge, and frozen broccoli florets in your freezer. Throw a few chicken thighs on a baking sheet, dump some broccoli around them, pile on salt/pepper/paprika/garlic/oregano, bake for 42m at 400F. 90 seconds of prep tops, once you get the hang of it. $1.50-$3.00 depending on desired quantities and prices in your area.
Or, 1/2 cup old-fashioned oats, 1 cup milk, water, or cream (depending on desired calorie content), and a dash of salt, microwaved for three minutes. Dump a bunch of cinnamon in afterwards, mix in a big spoonful of peanut butter and you're good to go. 5 minutes of prep start to finish. <$1.
No need for hilariously expensive pre-made frozen meals, though I suppose those could work as training wheels. Frozen pizza is pretty economical though from what I gather, though I've never bought or made it because I'm a space alien and hate pizza to the point where you'd have to pay me a lot of money to take a bite.