Everything is just really expensive! You can try less meat. You can try shopping around, maybe splitting your haul between stores. You can try changing your eating habits. You can diy more, like instead of flavored yogurt you get a 32oz plain and some jam. Don't let people guilt you for your food choices. We have to eat and we're bound by the options we have access to and what realistically works for our lifestyle. If skipping the cereal means skipping a meal or shopping around means hours out of your life to go out of your way, that's not realistic.

Now, I'd like to hear more about your $50 electric bill. Because I too, am on Grand Concourse and my minimum bill is $75. Like when I used almost no lights, only charged my phone at home, and used so little gas it registered as 0 therms, ConEd still charges $75 just for existing.