Nearly all meal prep mistakes come down to the same thing: building a system for an imaginary version of your week rather than the one you actually have. People prep food they do not enjoy, plan for seven perfect days, run out of fridge space on the first attempt, and...
The short answer on batch cooking vs cooking fresh daily is that batch cooking buys back weeknight time at the cost of variety and texture, while cooking fresh daily buys variety and better food at the cost of about half an hour every single evening. Which one works...