I personally know some folks who spend all their money on fast food, and then online it seems pretty common folks not knowing how to cook causes massive financial problems.
My super duper cheap meal that takes no effort is “lazy rice veggie soup”: Can of peas and carrots cooked with a bouyon cube until cube is dissolved Add cooked rice to mix, and heat until rice is flavorful with absorbed broth
I do a cup of dried rice, and a can of peas and carrots which means the soup has 800ish calories and I think it’s pretty good as it’s either 2 small meals that you can have sides with, or one large one!
So what are your cheap meals you like to make? The less well known, the better!
Can you get chicken for 2 bucks? If you have eggs and rice already you can get some chicken and make up a cheat’s oyakodon. Braise the chicken in some water, soy sauce, and a little sugar and/or an oxo cube if you have one, and then when the chicken’s just cooked drizzle your eggs in and then slide onto rice. Also if you want to add veggies, slice up an onion and cook that in the sauce
(…I have no idea what food prices are like in the US 2 bucks would barely get you a can of beans where I live I think the only meal you could make under 2 dollars is “cup of straight cheap stock” or “one pizza bun”)