English Translation
They already left.
Would ‘salieron’ work instead of fueron?
They already left.
Would ‘salieron’ work instead of fueron?
I would say: instead of se fueron. Salir is not used reflexively in this sense.
Disclaimer: I’m not a native Spanish speaker.
se fueron = they left
salieron = they went out, got out, came out
fueron = they went
se marcharon is another option.