Serbs and their history

There is no other nation in the entire Europe, whose history is such vague, mythical and not-confirmed. There is absolutely lack of reliable sources to confirm the crucial moments of their so called "great" history. One has no means to examine and analyse the sequence of events, and if you try to investigate objectively the accuracy of the these historical events and historical figures all you meet in your investigative journey is:

for the events

The primary source which confirms this event has not yet been identified

for the prominent historical figures like STEFAN DUŠAN

The primary source which confirms his parentage has not yet been identified

In regards of Serbs, their history and prominent people you can never find a reliable historical source of their own time.
Their history is based on myths and has been created after Serbia independence.
I think their history is everything but Serbian. They have no history.