But socialist culture leads to corruption repeatetly in all socities where the experiment is run ?

Same with capitalist governments?

I don't think corruption is a left/right axis like that.

And I don't know, maybe it's early days, but Mamdani seems less corrupt than his predecessors.

It's almost as if government corruption is not a byproduct of the system of government, but a byproduct of the fact that it's filled with people, and when people accrue power they will, by and large, abuse it.