Where does “бије́да” come from?

бије́да (Serbo-Croatian) comes from Proto-Slavic běda, from Proto-Indo-European bʰeydʰ- — to compel, force; to trust.

Ancestry of “бије́да”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	běda	trouble, misery, misfortune; adversity, calamity;...
2	Proto-Indo-European	bʰeydʰ-	to compel, force; to trust

бије́да — Etymology, Origin & Word History | Etymology Explorer