Each cultural group has a typical way of saying something that sounds weird for a “foreigner.”
Israelis say: “Ein li koah” meaning: I don’t have the energy… add the exhausted breathless tone of voice to get the total mood.
Americans, if I am a judge of that, lol, say: I don’t have time! add the exclamation mark to get the mood… it is like throwing your hands up in total exasperation.
Hungarians say: Too much to do…
I say: I don’t have brain cells for that.
All of the statements above are mistaken in pinpointing the cause of the “no”.
Why do you feel like you don’t have enough time?