what literary device best fits the sentence?

"Cause it's always been bout YOU."
irony, metaphor, paradox, personification, allegory, allusion, alliteration, symbolism, hyperbole, foreshadowing, onomatopoeia, theme, style, rhyme, scheme, meter, caesura, couplet, enjambment, foot, lambic pentameter, sonnet, stanza, anaphora, blank verse, genre, juxtaposition.

Personification

and why

Personification is the attribution of human characteristics to non-human entities. In the sentence "Cause it's always been bout YOU," the author is personifying the concept of "YOU," giving it the agency and importance typically associated with a person. This literary device helps convey the emphasis on the significance of "YOU" in the context of the sentence.