I don't know what you're claiming about "working," but the idea of anarchism not being real is debunked by many historical examples. I suggest you read up on them today:

The Art of Not Being Governed: An Anarchist History of Upland Southeast Asia by Yale Professor James C. Scott

Medieval Iceland and the Absence of Government
https://mises.org/library/medieval-iceland-and-absence-government

The Bantu peoples of Africa non-state elder dispute management system.

Among others.

Anarchy is simply the absence of "rulers."

The state "working" is 262 million democide deaths in the 20th century, more than private murder.

See:

20TH CENTURY
DEMOCIDE
https://www.hawaii.edu/powerkills/20TH.HTM