Getting back into Japanese and I have a few questions

Background –

I studied N5 in university 3-4 years ago, I used Minna No Nihingo and took Japanese classes provided by my uni, which I obviously forgot most of it cause I never used it afterwards

I used to play online games in Japanese lobbies to try and communicate with people but now I can't even do that so ig I am back to square one


I am now trying to get back into Japanese because I have been getting into Visual Novels and have found this amazing PC emulation called PC-98, which is mostly a Japanese only PC(there are some games with EN translation but most don't)

After doing a bit of research I started with WaniKani because I tried getting back into Japanese with Anki but got bored and left again.

WaniKani seems to work great, I have been using it for like week but it feels like I havent learned anything.

I do remember the kanjis and some basic meaning but unlike last time when I was studying in Uni, it feels like this app alone isn't gonna help me much.

I did start the kaishi 1.5k as well but I felt like I wasnt learning anything from it because I would just memorize the card that it was gonna ask from the sentence… so I dropped it

so TLDR- my question is what else do I study aside from WaniKani? do I start grammar? do I get back into Anki??

and if so where do I study grammar or vocab from?

by Siri2611