ONI not dropping XBOX

I been grinding multiple characters above level 8 I have one at 9 atm and no Oni I just think their is a bug I have put numerous hours into this grind as is. Im just making sure it isn't bugged or something because I have Farmed before n I get it it's a grind but sheeesh not one yet so wondering if its a bug or something right now where I can't get one I would appreciate it if y'all would look into it for me and everyone else not sure if anybody else is experiencing that issue but thanks a million

Update just got 1 must be 1 unlucky sonofagun lol

I always find the best way to get your drops is to come to the forum and complain about it, always turns things around good luck and grats lol