Japanese forums/online communities to talk about anime/gaming related interests?

[Need4Power]

Where can you find some cozy Japanese Bulletin Board System forums like this one?

I really do not understand the Japanese internet. It seems so hard to find hobby communities compared to when I'm searching in English. When I search [insert hobby/interest] + forums , I often find a good community to engage in. I do not manage to find any such thing in Japanese, at least from my limited knowledge and experience.

Am I just inserting bad keywords? Or did they all move to Facebook, Twitter, Reddit, etc?

I think it would be very helpful for me to practice discussing with Japanese people like this, maybe learning some colloquial talk and internet slang

It doesn't have to be super deep web, but I do not want to go to the big social media sites!