Why is the left in East and Central Europe sick?

What is the reason for the lack of an anti-capitalist left in Hungary and in fact overall in East and Central Europe? What are the objective and subjective factors, the historical-ideological or maybe psychological reasons that lead to this situation? Why is it possible, that strong leftwing anti-capitalist movements and organisations exist in Germany, France and also elsewhere but not in Hungary? Why in South America the populist – or so called – anti-capitalist left could gain the power while even the names of these movements are hardly known in Hungary? What can replace the communist and social democratic movements? Maybe we have to trust in their revival? And what can we do until then?