Scarlet Monastery - Cementery

Lordaeron Wotlk
Good afternoon everyone.
I am looking for a fallen champion for weeks but it never appears, he is always in one of the tombs near the stairs.
I do not know what the probability is that it appears, but I've already made more than 50 or 90 runs and it never shows up. I always find myself with one of the two more rares there.
Please, if someone knows that I am doing wrong or if I am in another place, I would be very grateful if they tell me.
Thanks for reading and have a good day