I haven't played AC6 yet but the fact that you're bothered by unreactable damage makes me think you're playing this like Souls. But it's not Souls, it's a shooter. Be preemptive? Make your own movement pattern hard to follow.
A very glorified DPS race is more or less what a duel is in a shooter.
I never realized that was why people used the primaey clipboard on Linux...
But I'll be frank : fuck that. I'd rather disable it entirely and stop having to deal with random text pasting in bad places when I'm using the touchpad