Why were the Serbs not happy in Austro-Hungarian Empire and what did they want?

The Serbs were unhappy in the Austro-Hungarian Empire due to their desire for national independence and self-determination, which was stifled by the empire's multi-ethnic governance. Many Serbs sought to unite with other South Slavic peoples to form a greater Serbian state, reflecting their aspirations for autonomy and cultural recognition. The oppressive policies and nationalist tensions within the empire further fueled their discontent, ultimately contributing to the rise of nationalist movements and the desire for separation from Austro-Hungarian rule.