10.11 is still a hot mess for large home media collection. Especially one with images mixed in. The team doesn’t even seem to prioritize fixing all of that before moving on building new features. Music collection are also slower and albums meta don’t load correctly anymore. I would hold off from fully converting to it if you have a large collection

Are you trying to watch porn from any location with strict age verification code like South Korea? If so, the first thing you need to do is get a geo spoofers, either VPN or proxy server. Then the world is your oister, porn is really easy to find on the Internet, animation like hentai very much so. Tools like ytdlp or j downloader would get you most contents from direct streaming websites. It’s only the searching curating and collecting that’s the challenge afterwards