Man, you must be having fun in the Lochs with all that salt you have. There's always people that manage to get a new item rather quickly, but MANY more that it can take a loooong while to get.
If you get a rare item fast it's luck. If you get a rare item fast it also means you had great RNG. They're basically one in the same for getting it like that. Same for the total opposite end of the spectrum.
This is literally how many things are designed in all games to keep you playing longer. It's part of any game's grind no matter how many people complain that their personal experience is the only thing that matters when it comes to these drop rates.