For me..

Breakfast is usually sausages and eggs, or a cheese and tuna filled omelette if I have time.

Lunch during the week I get by on whatever the lowest carb options there are at the workplace cafeteria, usually some some of meat and veges. Weekends I don't usually lunch at all.

Dinner will be more meat and veges, ideally a different combination from what I had at lunchtime. Common options include bunless burgers, fake spaghetti bolognaise (using zoodles), salmon and spinach, stir fry chicken, or steak with mushrooms and caulimash.

Snacks are rarely necessary, but options include macadamia nuts, slices of cheese or spam, also cherry tomatoes.

Drinks are either water or diluted cranberry/blackcurrant juice (low sugar varieties of course).