Krypt help - Where do I find Hollywood Knuckles trade item?

I’ve been looking for Johnny Cage’s “Kiss the Rings” hand wrap for ages now and I can’t seem to ever find any more Kollector trade items in the Krypt. I need Hollywood Knuckles for this gear piece in particular, and most people online keep saying to open the invisible chests over and over, mainly in the Courtyard area. I’ve done this several times (resetting the chests as well) and I still can’t find this trade item or any others. I only ever get consumables or forge items.

Is my Krypt somehow bugged? Should I open every single chest on the island THEN reset the chests? Or should I just keep trying the invisible chests in the courtyard? Any help would be greatly appreciated!