My question is how do you say when you are talking about sthg that you are not good to do anymore? For instance: "I am not good anymore to cook" . Here in Italy we say "loose the hand". How to say it in English? Is there any expression to say that?
And furthermore: after "I am not good anymore" we use "at" or "on" doing shtg? or "in"?
Thank you for answer, I am confused about it, actually.