If you dont have a car, you just go more often getting smaller amounts of stuff. Or you bring a cart. Grocery stores are more freqent, but smaller.

I stop by the grocery store on the way home and grab ingredients for dinner. I can fit a weeks worth of groceries on my bike but I tend to just go like 3 times per week on average.

I can't imagine needing to plan for a whole week of food at a time tbh. Being close to the store means I can just grab whatever I am in the mood for on a given day. Do you just force yourself to eat what you have at home even if you aren't feeling it that day?

My nearest supermarket is is a 3 minute walk away. I walk to the supermarket. We probably shop 3-4 times a week.

Buy food to cover 2 dinners and breakfast. Lunch is leftovers from previous dinner. I have a small fridge, so I can't fit a week's worth of food in there anyway.

Oh, and we transport everything in a backpack and / or shopping bags (with handles, only seen those paper bags without handles in American films).

I've never lived in a huge city, but where I live (Estonia), city planning is much better than much of North America so usually you wouldn't live too far from a grocery store, walking is usually an option, otherwise there's public transit. There's literally nothing weird about bringing your grocery bags on a bus or train or whatever.

If you don't have a car, you just shop for one or two days at a time usually. This way you can actually get fresher ingredients sometimes and you don't have to plan an entire week ahead at once. In fact, I'm lazy and just shop for one or two days at a time despite having a car and sometimes using it to go to the grocery store. I just don't know what I'll want to eat 2 days from now!

I have several supermarkets within walking distance. I can carry groceries from there in a cart or bag, usually approximately once or twice a week.

Occasionally I also transport groceries on public transport, mainly because I went to a supermarket elsewhere in the city on the way home, but this isn't the norm.

All of the above, depending on exact conditions

• when I was entirely without a car, I just walked. I was single so carrying groceries usually worked ok. As a first Thanksgiving when I got married I Walked to the grocery like 5 times for all the stiff we needed and didn’t think of ahead of time
• I saw plenty of people with carts and tried that a few times
• I briefly tried delivery
• I saw people using taxis - I didn’t realize at the time but many of them compromised by walking to and taxiing back
• I have usually had a car though, even if groceries was my only weekly trip (plus occasional needs)

Actually now that I live in an urban suburb, I could do a lot without a car but carrying groceries is not worth the fight to find an alternate way