livechart shows it is available on Aniplus Asia, bilibili & VVVVID
learn how to use nyaa
TPB used to be great once, now it is riddled with malware. There are safer alternatives like 1337x, rutracker & torrentgalaxy etc
only benefit I gained was a forum board to discuss and also that there were lots of seeders even for very obscure stuff
Install Tachiyomi and then you can use lots of websites like MangaSee, Mangadex, Nhentai, AsuraScans and many more.