I'm glad you liked it :)
There will be many more buffs and ways to upgrade your dice coming in v0.20.0 for people who are struggling. That being said, it's not entirely luck right now - there's strategies even for Shattering Ophelia (although that one does require a very hefty dose of luck). The girls' personalities allow you to predict where they'll put their dice, and both Meals and Tactics help push luck more in your favour.