Consuming media is a great way to supplement your language-learning, but be careful not to confuse the dialog used in anime with actual conversational Japanese. Just like how nobody actually talks like a Western cartoon character does, Japanese people don't talk like anime characters. Anime dialog is largely dramatized.

Also for what it's worth; depending on what you're watching, the English dubs have gotten way better in recent years. There's a lot of good talent in the dub scene these days, and Japanese directors are getting better at trusting the performance of western voice actors, instead of demanding that the actor sounds the way they think it should sound in English. In my experience, most dubs post-2010 are generally pretty good. Generally.