goes off the rails, goes haywire, derails
MOSS déraille peut-être.
MOSS might be malfunctioning.
— The Wandering Earth (2019)
L'accordéon déraille.
The accordion is out of tune.
— Diva (1981)
Il déraille totalement.
He's completely off the rails.
Elle déraille.
She’s losing it.
— Tesis (1996)
La société déraille.
Society is going off the rails.
Ma machine déraille encore.
My machine is malfunctioning again.
— Tár (2022)