Is it a good idea to learn English through anime?

My current level of English is at around B2. I’ve been watching a lot of YouTube videos from USA bloggers in English for about 2 months and it’s quite easy for me to understand it. However, I feel like the grammar and vocabulary in these videos are too small, so I need more. That’s why I’ve decided to give anime a shoot, because films are too difficult for me and I need something at middle-level.

So, is it a good or a bad idea? If a good, what platforms can you recommend to me where I can watch anime without a spam or a bunch of ads? If a bad, what should I choose to improve my English? I want to start with the One Piece. Is that a good choice?