I read through the posts and I have to agree I think marketing is a big weakness. I'm pretty sure the only reason I found you and your games was by doing a search for Otome games and checking out Rose. I snagged HG as soon as the pre-orders opened but I haven't bought any of your other games.
I will absolutely be buying the second Rose game and if you ran a kickstarter I'd also get this one. I'm not fascinated by the story, school settings feel done to death & I'm in my 30's so it's getting harder and harder to connect with characters in them. However, I like supporting Otomes in general, the concept is unique, and you've proven yourself as a good writer to me so I'll spare money on something I'm not sure if I'll enjoy or not.
If not many reviewers got back to you maybe try reaching out to some other VN devs? The community seems pretty tight even if they won't promote they might give advice themselves. I can't comment much because I'm the only person I know that doesn't have any social media accounts. I technically have a Tumblr but I only check it once every two or three months. I do use Discord but I'm not sure that falls into a social media category or not.
On top of Kickstarter I support a few artists on Patreon but I'm not sure how well that would work. I only support artists I already know/like and essentially I only buy them a cup of coffee once a month. I never get physical KS items, just the game and maybe artbook/making of/lore or name in credits only. KS can be good for publicity, even if it doesn't succeed it might draw eyes to the rest of your work and help the liquidity issue.
I'll typically lay down something between $5-30 for a non-guaranteed item depending on my level of interest. For a few examples I backed A Foretold Affair at $25, Zodiac-Axis at $20, Boyfriend Dungeon at $50 (embarassing now that I look at it), Royal Alchemist at $25... Better references, they have school settings: Band Camp Boyfriend I only pledged $10 and Reimei no Gakuen I only put down £22. The most I put in on any KS was $65 for Crossroads Inn and I -REALLY- wanted that game.
The prices for the content I got for both games felt fair, I don't recommend discounting further. (OK I'm 30 plus minutes in to writing this, initiating full stop.)