But you do get to participate in those decisions. We are a troupe species, after all.
Anarchism has suffered centuries of propaganda convincing people that it is synonymous with unregulated chaos, rather than more organized than authoritarian schemes. If someone shits in the water, you and all the other people who rely on that water can rightfully observe that that person is impinging on your freedoms and security, and can deal with it using the endless decision making process you’re required to have to get things done in your region.
Freedom is absolutely relative, not relatively absolute. It’s defined and negotiated, not subject to impulse and ego. Under anarchism, you are not free to attack, or shit in drinking water.