Less than half was identified, and some of them could have died from natural causes, some could be killed by KLA (as colaborators, Serbs, Gypsies, in gang/vendetta killings), some died from NATO bombing etc. And I guess you count KLA fighers as civilians?
Not KLA fighters, not victims of NATO bombs, and not Serb civilians. The methodology excludes those groups from the victims considered in the report. The "Killings" section of the report deals with Kosovar Albanian victims of Serb forces, and it explicitly states this in the introduction and details in the body of the report.
This is beyond your amateur hour understanding and efforts to discredit.