Diamond Horse Armor in Nether Fortresses (It doesnt seem to exist)

Raided around 6 nether fortresses and looted them for diamond horse armor... Found 0...

 

I then checked in with a few in creative and xray to find the chests super fast and could not locate any diamond horse armor after trashing a few nether fortresses...

 

I am not sure if this is a bug or if I am just very unlucky because diamond horse armor has an 11% spawn rate in minecraft bedrock in nether fortresses only (the highest in the game)... I would appreciate someone helping me out with this, thanks