I agree with you; totalitarian, authoritarian, possibly even fascist, often corrupt and other terms describe the countries that call themselves Communist better than the word Communist does. There is very little common ownership of the means of production anywhere.
While I am not a Communist, I think that most people would be happier in a truly Communist system. That said, I agree with some of Marx's perspectives on Capitalism, especially finance capitalism, and I think we're seeing outcomes past what he projected. Wealth has certainly concentrated in unhealthy ways globally.
My perspective is that humans will always only have Capitalism with a variable level of Socialist limits because greed is basically human nature and many people could never adapt to true Communism; any human power structure will always become corrupt. Government is just people, after all, not exactly an entity like some minds model it to be.
One perspective I've heard recently is that larger populations basically become ungovernable.
Curios if you have perspectives on PROUT/Progressive Utilization Theory, though it seems a lot like Communism:
https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2F...
Just noting that I have always had an interest in these topics, but being relatively wealthy in relatively poor countries has reinforced various perspectives regarding global injustices, economic and otherwise. I could write a lot on this topic, but there doesn't seem to be any point, because even the elements of humanity that recognize what's wrong aren't going to change anything.