SNAP WIC
US families need more help than just cheaper shopping, the actual safety-net programs matter a lot more than store-hopping:
SNAP (food stamps), apply through your state's human services agency; income-based, helps with all groceries
WIC — for pregnant women, new moms, and kids under 5; covers milk, eggs, bread, and more specifically
Feeding America (feedingamerica.org) — find the nearest food bank by zip code, no cost, no paperwork hurdle to start
211 (call or visit 211.org) — connects people to local food assistance of all kinds, including emergency pantries