"Pretty shite really".I have some agreement with you on this but not entirely.
I might well answer "Good" or "Good, thanks." and my response if I'm feeling under the weather could be "Not so good" or "Pretty shite really" depending on how off colour I am. Often I'd use those if I'm feeling fed up to some degree.
I think language evolves but some change I find really irritating. "Like" and "OMG" really get me going. I actually feel OMG is offensive and meaningless. The other thing which gets me is changing word use and then berating those who aren't up to speed. "Woke," "Non-binary," and "Lens" are current pet hates. I also don't like trendy, derogatory descriptions of others "gatekeeper" and "gammon" spring to mind.
That's today's rant over.
French translation is........My shite really looks very nice/pretty.