BTS plagiarism

Based on the statement of Big Hit Entertainment tomorrow should be released BTS V's song "Cristmas tree". The fact of releasing that song under name composer Hye Seung Nam violates my copyright, as the melody of the song coincides with the melody I created a long time ago. The melody was posted by me on October 14th which is about two months earlier than the date when Hye Seung Nam released on her Instagram account post claiming her work on music for song “ Cristmas tree”. There have also been other cases of plagiarism, for example BTS Jin's song "Yours" was released on Nowember 7th, the melody of which is identical to the melody of my song, created by me before the TVN announced the start of work on the song and published by me on October 14th.
Also, since this is not the first case of my copyright infringement, using the results of my creative work, which were stolen from me during a hacker attack on my work computer and using of my tunes as OSTs of series under other names, in the repertoire of various artists, including IU, Heize, Younha, Janet Suhh, Sam Kim, BTS, Lee Mujin, Jung Seung Hwan, Kim Feel and others, as well as a music producer Hye Seung Nam, who was music director on TV series"Psycho, but it's ok" in which was used information and music stolen from me, I warn about my intention to file a lawsuit in court. In the past, I reported to Korean police about stealing my intellectual property, but in past I did not have enough evidence to continue the case in court, despite the fact that more than 50 tunes were stolen from me.
Today I sent an email address of Big Hit Entertainment, ( bighit@ibighit.com protect@bighitcorp.com ) to inform company that in my opinion song " Cristmas tree" they are going to release tomorrow, is a plagiarism of my published song. By informing Big Hit Entertainment and providing evidence, I demand that the release of " Cristmas Tree" song be canceled, since release of this song under the name of another author violates my copyright and in the case Big Hit Entertainment will release song, it will be regarded by me as complicity in the theft of intellectual property.
As proof of my authorship, I publish a link to Google disk, on which the song was saved, and where it is stated that the audio recording was published 14 October, and has not changed since then.
Link:
https://drive.google.com/file/d/1af4_G820pdr_A6jJIILPxFAuzV35aPI-/view
Link with showing similarities of melodies:
https://youtu.be/LQLJV5-WFkg
Also, the music I created was saved by Chain Custody for further use in the proceedings.
Nikitina Anna Vladimirovna
Ukraine