Tropezaré comes from the verb tropezar, meaning "to stumble" or "to trip". It's used here in the future tense, "I will stumble".
In the context of the song, Natalia Jiménez uses this word metaphorically to express her resolve not to make the same mistake again in love. She sings, "Ya jamás tropezaré" (I will never stumble again), indicating she won't fall for the wrong person or experience heartbreak again. This makes it an interesting and relatable word for anyone who has experienced disappointment in love.
Have you ever been so heartbroken that you just want to give up on love entirely? That's exactly where Natalia Jiménez is coming from in "No Me Vuelvo a Enamorar" [I Won't Fall in Love Again]. She's had such a bad experience, she declares, "No me vuelvo a enamorar / Totalmente para qué" [I won't fall in love again / Totally, what for?].
It sounds like she really gave her all, only to be let down. She sings, "Si la primera vez que / Entregué mi corazón / Me equivoqué" [If the first time that / I gave my heart / I was wrong]. This disappointment has left her with a "mal sabor" [bad taste] and taken away her courage to try again. She's so determined, she even says, "Ya jamás tropezaré / En nadie me fijaré" [I will never stumble again / I won't notice anyone]. It's a powerful and relatable feeling when you're just done with love after a bad breakup!