diabolik lovers is originally a game, so you should start with that. the diabolik lovers mangas here are supplementary material and would expect you to know the story and characters from the game/anime beforehand
So as someone who never played the game but only watched the anime, would I understand/enjoy the manga? Or should I rather not read the manga at all?
I think if you've watched the anime that's fine, you'll understand/enjoy the mangas, since you know who is who.
As for which order you should read the mangas in, since they're supplementary materials I don't think it really matters. Just avoid reading the More Blood ones, until you've watched that season too. I think More Blood has new characters
Alright. Thanks so much for the insight ( ◜‿◝ )♡
I want to read Diabolik Lovers manga. What order should I read them?