Subtitles are usually timed to a specific video release. For S06E12, common "proper" release tags include: Younger.S06E12.PROPER.720p.HDTV.x264-KILLERS
If Bulgarian subtitles don't exist yet, you can create them in seconds by translating the English version. Download the file for S06E12 from Subscene. Use a Subtitle Translator . Younger subtitles Bulgarian S06E12
: One of the most popular Bulgarian subtitle databases. Use the search bar for "Younger" and look for Season 6. Subtitles are usually timed to a specific video release