커뮤니티 게시판 글상세

I would like to know what the algorithm is when in terms of pulling? I've bought the artifact and avatar pull but not a single Legend came up :( good thing I was lucky enough to get a legendary avatar through combination. Also, the enhancement feels like a scam, got several +11 BT and used tablet for a higher chance but all got wasted. Feels like it is so unfair