J'coffre is a colloquial French expression that literally means "I stash" or "I save up." It comes from the word "coffre," which can refer to a chest, a safe, or even the trunk of a car.
In the context of the song, the artist says, "J'coffre, mais c'est pas ça qui m'importe" (I stash, but that's not what matters to me). This implies he's accumulating money or resources, but he's emphasizing that material wealth isn't his ultimate priority, highlighting a deeper internal conflict.
Yamê's "Ne Reviens Pas" is a really direct song about a relationship that's reached its breaking point. The singer is deep in his own world, focused on his work and dealing with a lot of personal problems, as he says, "J'fais mon truc, j'fais rien d'autre" [I do my thing, I do nothing else] and "J'ai beaucoup de problèmes en tête" [I have a lot of problems in my head]. Because of this, he just doesn't have the energy for his partner anymore, admitting "pour elle j'ai plus la force" [for her I no longer have the strength].
It's a tough situation where both people are clearly hurting, described as "Deux fous qui crient dans l'appart" [Two mad people screaming in the apartment]. He's reached a point of no return, telling her, "Si tu t'en vas, S'te plaît ne reviens plus" [If you leave, Please don't come back]. He's done with the back and forth, emphasizing, "Ça fait bien trop de fois, Maintenant je ne t'attends plus" [It's been too many times, Now I'm not waiting for you anymore]. He'd rather end things completely than let the relationship turn into hate, saying, "J'préfère partir Avant qu'on se déteste" [I prefer to leave Before we hate each other]. He's poured everything he has into his music, leaving his heart empty: "Mon cœur se vide J'ai tout mis dans mes couplets" [My heart empties I put everything into my verses].