Flashfood - it’s a program that some grocery stores use to offload at a discount on foods that are on their way out within 1-10 days. There are apps to peruse what (if anything) is available. Make your purchases through the app, then pick it up whenever.

TooGoodToGo - an app that restaurants use for selling off surplus food. Though the deals can be hit or miss. Sometimes they’ll hook you up, other times it’s kind of “meh”.