I mean this as respectfully as possible, but I think that your use of an installer is probably why your game still has so few ratings. As RPG Maker games are portable and fully self-contained, an installer seems extremely unnecessary. At best, people would consider it to be an unnecessary layer of annoyance for a game that is presumably only 20 mins to 1 hour long. At worst, people would consider it to be pretty shady (especially since the installer asks for administrator privileges).
It also doesn't help that there aren't any screen shots, the cover image gives no indication of what the game is about or what type of game this even is, and you didn't write a synopsis or description. So for those of us that are less cynical, there's nothing there to draw us in or make us curious enough to want to go through the hassle of using your installer, especially since there are 118 other entries to play. And for those of us who are more cynical, there's nothing there to convince us that the game even exists at all, and that this isn't just some low effort attempt to spread malware or something.
Please don't misunderstand though. I'm not accusing you of doing anything nefarious. I'm just explaining what is probably going through people's heads when they choose to pass up your game. And I'm not saying this stuff to put you down, but rather to give you advice for future jams.