Retractarme means 'to retract' or 'to go back on something'. It's a strong verb that implies changing one's mind or reversing a decision, often with a sense of regret or second thoughts.
In the context of the song, the singer expresses a firm resolve: "No quiero retractarme de haberte perdido" (I don't want to go back on having lost you). This reveals a powerful emotional struggle, where the singer is trying to convince themselves not to regret ending a relationship, even though it's difficult.
"Espero" ("I Hope") is a breakup song built entirely around one repeated wish: to move on cleanly this time. The singer hopes not to let the other person down again, not to chase after them, and to hold onto their own pride and strength the way their ex always seemed to.
Underneath that hope is real pain. The singer admits they hope their skin stops missing the other person's touch, that their eyes stop crying, and that a whole year passes quickly so the longing fades faster. They picture themselves finally able to look at the "bitter reality" clearly again, without fear clouding their judgment.
By the end, the song lands on acceptance rather than anger: the singer hopes another love touches their heart, and says they don't want to keep looking back on having lost someone who, in the end, didn't love them back.