Hmm, committing to actively immersing in media of the target language is hard. What’s important is just building a large vocab bank, understand grammar, and you can start absorbing Japanese media. One of these JP language youtubers (forgot his channel name, sadly) recommended creating a secondary YT account where you only consume Japanese videos, prompting the algorithm to advertise exclusively Japanese content on that account. This is one avenue of Japanese immersion–personally it’s not my thing, but for those that can tolerate Japanese TV, comedy, and dramas, in amounts, it can be super helpful.
Consuming raw anime and manga is popular for JP learners, of course. You can get manga from eBay, Amazon JP, Shueisha, CDJapan, etc. Manga might be a good place to start, because while it’s for native Japanese people, popular manga is generally juvenile, thematically simple enough, includes furigana, illustrations give you context, etc.
US Netflix has a lot of Japanese stuff (granted, it’s mostly mediocre anime), but it has one good show in particular: Terrace House. Yeah, it feels like cheap reality TV, but the bumbling cast and the judgmental celebrity panelists both make for pretty valuable listening practice for casual conversation. So this is a specific one you can consider. Personally not a fan of Japanese TV, so I’m not sure of what else is popular.
NHK Easy News, is digestible news in all Japanese, my teacher would occasionally play these segments for the class.
So you’ve got a lot of options, OP! Very difficult transitioning from the textbook, Wanikani, Genki, Anki, what have you, to immersive study. I hope you enjoy it.