If you make a list before you go into any store, you are more likely to get the things you need rather than picking up random stuff you see in the store that you don’t need.
When you make your shopping list, plan your meals for the week as well. This way, you won’t give in to the temptation of ordering a pizza instead of eating a prepped meal you planned that is within the safety of your budget.
You’ll find the best prices and cashback shopping options with apps like Honey and Rakuten. You can also go “old school” and cut paper coupons from newspapers and flyers.