Makrooh means disliked.
Only Allah swt knows whether or not your call will be rejected. There are special times where the likelihood of prayers being answered is increased i.e. on Fridays, after studying the deen of Allah, when sick etc. so it is better if you do not wish for death.
Your time of death, your day, the place you will die etc. has all been written for you so why wish for something that will inevitably happen? Death is certain. Let it be an honourable death and let your meeting with Allah swt be a pleasing one Ameen.
Allah swt could be testing you to bring you closer to HIM insha Allah or cleansing you of your sins. My friend it is a win win situation Alhamdulilah. A Muslim never loses. Alhamdulilah.