What do you mean by socialism?
I live in a Scandinavian country which by many accounts are more socialistic than e.g. USA. Scandinavian countries are sometimes heralded as paradise on earth which I disagree with, however by no accounts can it be said that socialism has caused Scandinavia to fail in any objective way (wealth, happiness index, life expectancy, child mortality). We are of course not socialist in the sense we believe everything can be solved with money but I think even you understand that is a strawman.
So are Scandinavia socialist? Is it more socialist than e.g. the USA? Can we agree that countries can be at least this socialist without failing?