you made a mistake
Francamente hablando, cometiste un error.
Frankly speaking, you made a mistake.
Cometiste un error, hijo de puta.
You made a mistake, you son of a bitch.
— Encontré al diablo (2010)
Perhaps you made a mistake.
Ya que cometiste un error, reconócelo.
Since you made a mistake, admit it.
— Quieto, muere, resucita (1990)
Maybe you made a mistake.
Cometiste un error al rechazar su ayuda.
You made a mistake by refusing their help.
Cometiste un error, pero no es grave.
You made a mistake, but it’s not serious.