I used to love these books as a kid. I suspect they're not as popular now with all of the non-linear video game options that kids have. But in their time, these were a complete game changer in storytelling.
Similarly, in the U.S., the popular 2010s licensed titles from Telltale Games were essentially electronic CYOA as well, since they were heavily narrative-driven and had simpler gameplay mechanics than traditional point-and-click adventure games.