The first step is to look to organizations in your own community, particularly those where you might have a connection. Many religious groups offer help with rent or groceries or clothing.
Some groups keep waiting lists.
Some offer help with groceries, daycare or help with utility shut offs. Many agencies have limits on the amount of cash they can offer or limits on how frequently they can provide help. You are likely to find that a mix of help from friends, your religious group plus an agency may be the best solution.