I think you are doing pretty well. We are 2 adults and 2 dogs. We spend about £10 a week on dog food and between about £50 a week on food for us.
Me and DH are both vegetarian so that makes it cheaper. We eat lots of lentils, chickpeas, beans, nuts and buy in bulk (usually in indian supermarkets).
We do a big shop for things like lentils, chickpeas, rice, pasta, tinned tomatoes, different beans, gram flour, coconut milk and spices about once every 4 or 5 months.
We do a big supermarket shop for things like teabags, coffee, milk (we only use oat milk), bread about every 6 weeks.
We then shop weekly for fruit and veg. We buy as much as we can from the local market - works out cheaper and not wrapped in plastic.
We eat lots of curries and veggie chilli and things like black bean burgers, chickpea burgers, lentil bolognaise, spinach and mushroom lasagne, nut roast, vegetable stews.