I agree about the F-bomb (so did Eckharts Ladder for that matter). I dont object to hearing it at some point, but in the context of the episode, "Fight" works much better.
As for real world cussing in Star Wars, ln Ep 3 of Andor, the seargent says "shit!" when everything goes to - well, shit. That's the first actual in-universe swearing we've heard.