When you get supplies, there have been some wonderful things I have learned from these threads.
You can try Costco and Walmart places and see if they have what you want.
If they don’t, try the hardware stores—people seem to overlook them.
Of course try your local grocery store and see if they have what you need.
For any missing items, try the smaller local grocery stores—particularly if they are in an exurb or rural area—they seem to be well stocked almost everywhere.
Here in the northeast we have a place called Ocean State Job Lot—discount on all sorts of items including food—and they were fully stocked with everything when I visited them last week.
Also, if you can shop during the day on a weekday—most people are working then.
Our local Ace hardware had a bunch of stuff that was sold out in the big stores already.