no fui capaz de

No fui capaz de entender nada.

I couldn't understand anything.

No fui capaz de comérmelo.

I couldn't bring myself to eat it.

No fui capaz de moverme.

I couldn't move.

— La grande bellezza (2013)

No fui capaz de decirle la verdad porque no quería hacerle daño con mis palabras.

I wasn't able to tell her the truth because I didn't want to hurt her with my words.

Hay tanta gente a la que no fui capaz de ayudar.

There are so many people I wasn't able to help.

— Русский ковчег (2002)

No fui capaz de dividir el agua dulce.

I was unable to divide the fresh water.

— Masaan 2015 (2015)