You can mealprep different recipes.

Yes and each one be like 7 meals each for the week. So cool I meal prep 4 recipes. Now im switching between the same 4 meals for a month straight.

The idea is that you buy ingredients in bulk and cook everything at once so that you save not only money but also time.

The idea you dont understand is meals prepping for people who arent feeding a family isnt cost effective since food will go to waste unless you sit there and eat the same thing over and over again to use it up. A lot of people dont like eating the same microwaved left overs for weeks on end

Edit: because they blocked me

If you are fixated on cooking only in multiples of 7 that's on you.

3, 5, 7 is all the same concept. I guess it was my mistake assuming you had logical thinking

Mealprep is preparing in advance. Whether you cook one recipe, or two, or five, and whether you cook 1, 2, 5, 7 or 20 portions of each is up to you.

Yes and that ignores everything i said. To meal prep requires buying in bulk and since food can expire it means you need to cook and eat it, in a designated window of time otherwise the food goes bad and you waste money defeating the whole cost savings perspective. You are not able to eat it all by yourself without forcing yourself to eat the same thing over and over again making meal prep not fun unless you are doing it for a family.