Yes. Of course it failed. It also succeeded several times. I'm not a communist, though. (I do have communist friends, however.)

Most of my communist friends are not authoritarian communists (aka tankies). A tankie is a very specific type of communist who believes in central autocratic power and a single party.

I think you'll find most modern communists tend to prefer a worker led democratic government. And people like myself prefer a syndicalist democracy without a central government.

I consider tankies my opponents, just like I consider all authoritarians my opponents.