Dude, it is literally impossible to get people to leave reviews. I went to that con a couple months ago, and had like two dozen people tell me, to my face, that they'd leave reviews. Not a single one of them did. Same goes here on Hexbear, a couple people recently assured me they'd drop a review, but then never did
Oh that's so real to me and I hate it. 
I've found for my own work that there's a nearly-impossible margin between "being too pushy about reviews" and "hinting in a way that is not noticed or outright ignored. 
At the end of the day, I'm mostly just glad that they actually played the game, though. Reviews are a way that fans of the game can ensure that Steam pays me more for the work it took to make it, but it also just means the most to me that people actually appreciate the game itself. The more people who get to do that, the more satisfied I will be with the obscene amount of work it was to make it.
I have to take comfort that most people that read my work seemed to enjoy it, even if they don't leave reviews and sometimes just privately message me and say they liked it. Yeah it feels good to read that but it'd mean a lot more if they just posted a few sentences where the algorithm can pick it up AAAAAAAAAAAAAH 