Don't worry man, you gotta keep trying. Sometimes I find it easier to find one, when you don't look for one. For example, I found mine while looking for a famed cursed blade. And my friend asked me how i got black clothes because they were looking for them forever. I told them it was because i wasn't looking for them. Maybe, if you try and search for something else, what you really are hoping for, will show up
I know it sounds stupid, but it has worked for me so far.