I do my main shop in aldi, fuzzpig and like their Greek yoghurt. I don't find it sour but it may be an acquired taste. I do tend to mix a drop of maple syrup in and some fruit, or I have it with my homemade mueseli which has dried fruit in so it's slightly sweet. You could always try it with some maple syrup or honey or fruit spread and reduce the amount as you get used to the yoghurt? Most of us are over exposed to hidden sugars I think, which males it hard to eat foods in their natural form.
I like the idea of a list of meals.
Breakfasts, I usually have homemade mueseli, or Greek yog with banana and maple syrup. Sometimes I have toast from homemade bred, with peanut butter (the kind that's just peanuts).
Occasionally we have pancakes with fruit. Either normal ones made with wholemeal flour or I mix banana, ground almond, and an egg and make a sort of scotch pancake out of that.
Lunch, usually something eggy and bready, scrambled with spinach, soft boiled, poached, eggy bread etc. I've cut downburgersing one slice of homemade bread instead of two. I COULD eat two but I actually don't need to! Usually add salad sticks to this as well.
Sometimes its leftover dinner from the night before, or homemade soup.
Dinners are where I struggle. I dream of coming up with amazing, nutritious meals but fail a lot! We tend to have things like pizza, baked fish, burgers, pasta, stews etc. I always make everything from scratch, I tend to bulk meals out with legumes and lots of veg and serve 3 or 4 veg with each meal. I like the Girl Called Jack recipe book for quick, easy meals that taste amazing, though I tend to use wholemeal rather than white everything