As others have said, cooking from scratch as your base will help massively. We also cook veggie only Sun - Thursday and look forward to some excellent meat at the weekend.
Pretty much anything is delicious if you start off sweating some onion, butter, garlic, leeks, celery combo in a heavy based pan.
Then if you want curry flavours add some garam masala, cumin etc; if you want rich tomatoey flavours add tomato purée.
Then some veg … potatoes, squash.
Then some protein … beans, chickpeas, tofu, lentil.
Then your saucey element - chopped tomatoes, stock, coconut milk.
Then your finishing touches - sprinkle of nuts, spoonful of pesto, smothering of cheese, spoon of yoghurt.
That’s how I try and cook. Then add carbs in the form of bread, baked potatoes, rice.