It is possible to make far cheaper meals than that.
Assuming that you are having 3 meals a day, that's 30 dollars per day, which is a monthly budget of about 900 dollars for food.
Right, let's start with breakfast. I really like Birchermuesli and it's a good place to start, and you can actually make most of it, but save it for the rest of the day. It's oats, nuts of sorts, yoghurt, lemon juice and some fruit. That is some of the healthiest and cheapest stuff out there, and ultimately you don't need to buy everything every day. A box of oats can last a week or even more. Yoghurt's the only non-essential thing, but you may want to use milk rather than eat it all dry.
Anyway, you're probably gonna find yourself spending about 20 bucks (or less, it's about 20 bucks where I buy) on this, keep in mind you're gonna be spending that per week, not per day. Which means that this is going to cost about the same as you would for breakfast for two days - this can last for about a week or so eating it twice per day.
Then for lunch and dinner, well, you kind of need to learn how to cook. It's not difficult in any way, you just need to pay attention to what you're doing. If you've a pan and a pot, you can just about do anything. Rice and beans is kind of a classic, as is pasta. Frying meat is not difficult, and you will learn with time. Making soup is also a thing you ought to learn how to do, it's not difficult at all and they tend to use ingredients you can buy on the cheap or by the bulk. One of my favorite ones on the cheap (French onion soup) is quite literally one onion which you cut it thin and water, but you can switch the water for broth or wine, and add in milk or cream, or even cheese.
As for buying habits, I reccomend farmer's markets, butchers and just about anywhere you can get stuff on the cheap. Get them by the bulk, too, since it basically means you don't have to go out to buy as often and you restrain yourself from buying unneeded stuff.