Again, not sure what to tell you, RNG is RNG. It just seems that you've run into some exceptionally bad luck with it.

I've done 4 of the ARR relics, 1 when it was current and 3 after nerfs. After the nerfs it usually took me only 5-6 Fates tops to get a crystal to drop, with stubborn ones never taking more than 15.

I know you've said it before that you've done this before, but are you sure you're in the right zones? Not all ARR zones gives crystals, spent about an hour on my last run of the relic in the wrong zone and wondering why I wasn't getting anything, then /facepalmed when I checked a guide and saw that zone I was in didn't drop any crystals.