Lotteries in crypto gambling are also popular and already have their own fans. And some casinos provide this lottery in their casinos. But that doesn't have anything to do with magic.
Is it? Can you mention some casinos with lottery games where there are many active players playing the lottery game?
Most lottery in crypto casinos is being used for marketing/promotional tool where players get tickets for their wagering activity, but for the real lottery games, I cant see it as popular.
If you do some researches in this forum/gambling board, there are many failed lottery based game casinos because of the less interest from players/forum members.
You must know that freebitco.in has been operating for several years and I see that many people still buy tickets to win this huge prize. Apart from that, you can visit Crypto.games, BC.game and others. You can find them in search engines for even more listings. Perhaps if that casino failed to gain more fans in the lottery, it would be because they have not found the right promotion method or focused their promotion on other, more popular gambling games.