The Bible prophesy is
"A days work, for a loaf of bread!"
So, if you believe in end times stuff,
I would say food shortages will be the problem.
Right now, I would stock up on Flour, yeast, and a bread making machine, only because of the Russia/Ukraine conflict and Ukraine unable to ship out their wheat etc to other countries in need....that would put shortages in wheat on to the world's shoulders....with their supply. Buy a lot of dried pasta products too.
Droughts, not enough water for all crops in the USA is another problem....now and on the horizon....
So stock up on canned, or dehydrated.
Begin your own gardening, and learn to can.
Buy beans for protein.
Don't forget necessities and especially medicines, most made in China....if we have conflict with Taiwan and China, first aide stuff, and aspirin, tylenol, cold or sinus medicnes, etc all could be affected with shortages.
Batteries, solar charging devices and the kind of stuff you would have in your emergency weather events, will always come in handy.