luck is unpredictable at best.
For example. You roll at the gacha and fail to get something you want even if you spent a shitload of game currency. Later in another game, you randomly decide to use a roulette out boredom and spent for just one roll and you somehow get a jackpot on some random virtual roulette, getting an exotic item.
TL;DR: Luck is a pain in our ass.
R4ptr0jo rolled 5d6 and got a total of 19:
6, 4, 5, 1, 3