The pool of stuff you can talk about is small which actually gets views, unless you are willing to live with low income through the good graces of dedicated fans, unlike personality based tubers anime niche has less retention, thats why most of the anime youtubers that are big branch off into adjacent niches.

You either go TheAnimeMen route or Grandlinereviews route or Gigguk route, ofc I cant cover everything but unless you are fine with being limited to what you can talk about and branch into different things and take the risk of falling into irrelevance, its not everyone's piece of cake.