to be wrong, to be mistaken
Of course, I could be wrong.
Io potrei sbagliarmi a riguardo.
I could be wrong about that.
I could be wrong.
O mi sbaglio nello sbagliarmi nello sbagliarmi nello sbagliarmi!
Or I am mistaken in being mistaken in being mistaken in being mistaken!
— Weathering with You - La ragazza del tempo (2019)
I could be wrong.
I know I’m wrong.