Sorry but you're owed no explanation beyond what's already been told. The rewards from opening a lockbox are random and you've been unlucky, thats it. Its fair because its RNG, everyone has the same chance of getting the items on the loot table when they open the box. How many they open doesn't change the drop rate, it just gives you another chance to roll. If this thread is deleted it'll be because you're overly rude and antagonistic, not because you questioned SE on their loot table.