It really depends on where you live, the infrastructure and transit available to you, and any other circumstantial factors.

First off, a big part of what !fuckcars@lemmy.world wants to fix is the problem that many communities are simply designed with the assumption that everyone will drive everywhere, which often means most people aren’t within walking distance of shops (because it’s literally illegal to build grocery stores in many residential areas). It also often means very shoddy pedestrian infrastructure, sketchy (if even existing at all) bike infrastructure, and little to no public transit.

If you live within walking distance of a grocery store, you’re in luck! Something like a granny cart (pictured below) can allow you take pretty heavy loads of groceries on foot.

If it’s too far to walk but you have decent bike lanes or paths that you feel comfortable riding on, you can attach pannier bags and/or crates to a bike (an e-bike makes it even easier) to carry pretty big grocery hauls home.

If neither walking nor biking are options but public transit is, you can take a granny cart on the bus or train easily as well. Of course, a limitation is none of these three options can take nearly as big a haul in one trip as a car can, but the idea is you can make smaller, more frequent trips. For example, I live a 5-minute walk from the nearest grocery store, so I can pop on over a couple times a week to get a few items, which is light enough to carry. Of course, if you need to feed multiple people and it’s a kind of long, onerous journey to get groceries by foot/bike/transit, this might no longer be feasible, unfortunately.

If none of those are feasible, there’s no shame in having to use a car. The villain here is the system that forces people to drive even if they’d prefer not to, not the people being force by circumstance to drive.