Alternative SRT files are often available via Addic7ed for multi-language support.
Undine.2020.GERMAN.1080p.BluRay.x265-VXT (and compatible VXT/RARBG encodes). Language: English (Full and SDH available). Reliable Sources:
If you speak German but need help with specific terms, look for "Forced" subtitles. For non-German speakers, ensure you download the "Full" SRT file.