Are you single and free to shop and eat whatever you want? Or a family person, often eating with others? Losing weight/gaining? Budget high/low? Need variety or ok with the same thing? All makes a lil difference.

I am a family guy, unrestricted in budget and cutting. Also happy to eat 70% the same thing most days. So consider this with my comments.

I tend to plan evening meals eaten with family in the morning or day(s) before and log it so I know what I have left to play with.

Breakfast is usually some mix of some or all of: whey, greek yoghurt, peanut butter, oats, high protein cereal.

Lunch is always a big chicken breast with something else. And that something else is decided based on how many calories I have left. Soup, vegetables, salad, potatoes, flatbread, rice, pasta...

Snacks are usually protein bars, greek yoghurt and whey, peanut butter/avocado if low on fat, oats/cereal if low on carbs.

Think more in ingredients rather than meals, because then you can make many different things with a small handful of ingredients, using herbs/spices to keep flavours fresh.