How to eat healthy and very cheaply. Who has hints?

I’m diabetic and single. There is no money for food anymore. I get stuff from a food bank but most of it is pasta. I try to do low carbs and love fresh melons, berries and veggies. I dont like to spend too long in the kitchen. What kind of money saving tips do you have? Good cheap easy recipes? Do you have a serious food budget you have to live on? I need help in these lean times.