I am American, and live very close to the coast (Florida), so my meals are probably different than yours. Hopefully, I can give you some ideas, as everyone here has given me some great ideas to try!
We don't eat beef, but make tacos with ground turkey. Can also be used in burritos, and leftover chicken makes awesome enchiladas.
Grouper is a firm white fish, which we season with blackening seasoning and either grill outside or broil, for sandwiches.
I slice chicken breasts, making each into about three thin cutlets, then freeze 2-3 to a bag. I can pull them out of the freezer (they thaw fast that way!) and make a curry, or satay with rice. Lots of things can be done with chicken cutlets! Panko crusted and pan fried. I like to broil the chicken cutlets, put them on a toasted roll with fresh mozzarella slices, a handful of basil, balsamic vinegar and olive oil. Chicken thighs are completely different and we roast them with za'atar seasoning or miso paste. For the miso paste, I mix in soy sauce, garlic, ginger, honey and bake until done.
We eat a lot of shrimp, which you call prawns. I'll make a newburg sauce and have that and shrimp over rice. Sometimes I make shrimp patties with an aioli sauce. For the patties, I mix in diced shrimp, onions, horseradish, panko, etc. Fry them in a pan. You can make patties with canned salmon or even tuna, too. Or, just dredge shrimp in cornstarch, and pan fry. We have a lot of fresh seafood here and any combination can be used in a seafood bake, or a chowder when the weather is cool.
We like "breakfast" for dinner sometimes, too. Waffles and maple syrup with scrambled eggs. Or omelets with hash browns. Here, we eat a corn product called "grits" that you probably don't have there. It's bland, but when served with butter, salt and pepper, it's very nice. Or, some people make a pot of grits and stir in cheddar cheese, green peppers, onion and so on.
I prefer to cook at home. My food is better, I know how it was prepared and it costs less than a restaurant.