Since PSA releases rarely include embedded subtitles, you will need to download external .SRT files from OpenSubtitles or Subscene. Name the file exactly the same as the MKV for auto-loading.
Files with these naming structures are typically distributed via torrent sites or unauthorized streaming platforms. Accessing or downloading such files may violate copyright laws and terms of service for streaming providers. where you can watch Red.One.2024.1080p.10bit.WEBRip.6CH.x265.HEVC-PSA
This is the engine of the operation.