The music in the video file (commonly associated with a viral "shrimp" or "creature" meme on Reddit and TikTok) is "L'Amour Impitoyable" by Shiro Sagisu .
Evangelion: 3.0 You Can (Not) Redo Original Soundtrack
It is frequently used in internet "shitposting" or surrealist memes to provide a sense of overwhelming, cinematic dread to absurd or low-quality videos.