> Everything you see in the supermarket is garbage - one what is in it has been consumed
Only when you buy junk, which I assert is not actually food anyway.
Stick the outside and you'll buy fruit, vegetables, meat, beans, rice and pasta.
You can put all of those into re-usable bags or containers and buy everything you need to eat very healthy meals with no waste at all.
If it comes in a shiny plastic package, plastic bottle or tin can, you shouldn't be eating it anyway (in general)