Whats the question?

You have 1800 income, so you pay about 600 in rent. So thats about a third, or thirty percent.

That leaves 1200 for everything else. Do you pay for a car, car insurance, gasoline, cable, phone, any medical stuff, personal care, stuff for the kids or grandkids, meals out, Starbucks? That wont leave you much for food.

From what ive seen of food pantry youtubes, its not ALL mac'n'cheese - they often have frozen meat and fresh or canned fruit and vegetables, beans and rice. Sometimes you can choose, sometimes you cant. Maybe your kids can use the more processed stuff.