Food is a basic need for everyone, whether you have money or not. You need to eat at least one meal every day to survive, which can be tricky when you do not have money.
When you do not have money, you need to get creative to get free food. One of the creative ways to find something to eat without spending any money is foraging in the wild.
There are community gardens where people farm together and share the food they get from the gardens. This usually applies to people who live in the same neighborhood.