Most anime fandoms are predominately male - especially since kpop blew up and took a lot of focus of potential female anime fans away. There is a stark difference to early-mid 2010 to today, than I thought shows with a focus on a female viewership would increase and come close to 50/50 if not surpass male focused shows - but than Kpop took off and even in Japan women and girls tend to get swept by it.
People can only spend so much money or have so much time for entertainment. I came back to Kpop after I essentially stopped in 2012 and now I'm back at 50% anime/manga/light novels 40% games and 10% kpop. There is only so much time I have as a working adult.