You gotta spread the word.
But, being real, it's going to be slow. The nature of the beast with lemmy/kbin is that there's a very long discovery process. So, not only do your have to spread awareness of your c/, you have to have those users be active on a lot of other ones, and feel motivated to share links on yours.
There's the new communities c/ on lemmy.world (I think? Could be lemmy.ml, my brain is fried rn) though. It's helped me discovery wise. And you can't be afraid to do a little self hype. Like, when you find something to post on your magazine, tell/ask the person you're borrowing from that you did so/want to. Provide a link to that bestof post as well.
Yeah, it's shameless self promotion, but you won't have to do it long, assuming the lemmy/kbin world stays steady.
Edit: make sure your link is formatted right for jerboa/app use as well.
Legit, there's something strangely satisfying in taking a cold hotdog straight from the package, slapping it onto a piece of bread with some condiments and just going down on it like a starved hedgehog.