For those specifically looking for regional subtitles (prevod) without the hassle of manual searching:
Strani filmovi sa prevodom — Gledanje online besplatno (Vodič)
: Focuses on curated selections, including award-winning dramas and documentaries with subtitles.
: Often cited as one of the best for variety, Tubi is available in Serbia and other non-EU Balkan countries. It features a large collection of films, though its availability within the EU remains restricted due to GDPR.