I definitely understand. For a while my husband and I didn't have a car and it was such a hassle to go grocery shopping. We had to go to a store that we didn't really like, instead of a nicer one closer to the house, because there was more reliable taxi service from there. Even so, at busy times, we had to wait a while for a taxi. Uber wasn't an option here at that time.
We tried online ordering, but the stores we tried would charge you the full amount and then sometimes they'd be out of something, so you wouldn't get the full order. Then you had to follow up to get a refund for the items they didn't have. It was a hassle.
We have a car again, but these days due to these awful neighbors that stole our parking spot, we have to park several blocks away from the house. So, we either have to limit the weight of what we buy to be able to carry it, or make a stop at the house and then go park the car. Fortunately we are moving soon and will have a real driveway to park in.