No, you can’t. You can reduce your consumption, and that’s great

But you have to eat. You have to wear clothes. You likely have to drive and to pay rent or buy appliances. You have to buy entertainment, because honestly most everything is monitised to crazy levels.

You can’t opt out. You can be a different kind of shopper. You can be an anomolus data point. But even if you live in a self built lean to and live as a freegan vegan, you’ve changed nothing if you’ve done it alone