shouldn't have
I shouldn't have gotten involved in that fight.
— La princesa Mononoke (1997)
No debí escribirle aquella carta a Paro.
I shouldn't have written that letter to Paro.
— Devdas (2002)
No debí haber ido allí yo solo.
I shouldn't have gone there alone.
I shouldn't have asked him to sing.
— A Taxi Driver: Los héroes de Gwangju (2017)