Food for my poor family with 5 kids and 2 adults

Hi my name is caelib. I am a 14 year old boy that lives in a struggling family of 4 sisters and 2 parents. Im trying my best to help out my parents with finding money to help with groceries as we have bearly anything after bills and rent. My mum has a medical condition called fibromyalgia that prevents her from working so we are living off my stepdads wage and he earns almost minimum wage.I would thank you dearly if you would help me and my fam out.