Estrellarme literally means "to crash myself" or "to smash myself". It's a dramatic and impactful verb that goes beyond a simple "fall" or "hit".
In the song, the artist uses it twice: first, wishing he had "crashed in a plane" (estrellarme en un avión) instead of "crashing into your love" (estrellarme en tu amor). This powerful metaphor conveys the devastating and destructive impact of a toxic relationship, making it a memorable and emotionally charged word.
"Mil Maneras De Morir" is Carín León and Kakalo's take on heartbreak as a kind of death. The singer says there are a thousand ways to die, and falling for this person turned out to be one of them.
He wishes he'd never met her at all. He even says he'd rather have survived a plane crash than crashed into her love — a dramatic way of saying the pain of loving her outweighed anything else life could throw at him.
The chorus keeps circling back to that same thousand ways to die, admitting that whatever he had, he lost chasing her. It's a song about giving everything to someone and ending up wrecked because of it.