If you write a poem entitled yourself and their is another that plagiarism?

If I write a poem entitled "Myself," and another poem exists that is substantially similar—using my phrasing, imagery, and structure without attribution—then that other poem would be considered plagiarism. The fact that my poem is titled "Myself" doesn't change the plagiarism aspect. The issue is the unauthorized copying of my original creative expression. The titles could be different, and plagiarism would still be the case.