Not enough backpacks and helmets in Tricks N' Treats?

I feel like I'm going crazy after several games. It's bad enough trying to get a white backpack, but anything better? Lol no chance. Same with helmets. It's really dumb making it farther into the rounds just to be one-shot because of my wet tissue paper helmet can't stop a sentinel shot, let alone a kraber. https://vshare.onl/