Thanks for the feedback :)
I didn't really do too much marketing for this. I do have a decent-sized twitter account so that slightly boosts the view count. The game also won this jam game, which resulted in it getting featured in a youtube video. The jam also happened when there weren't any larger jams going on at the same time, so there were less games being published.
I think the best thing you can do is make your cover image, screenshots, title/descriptions as appealing as you can. If enough people view your game initially then it'll end up on the itch front page which will boost the view count even more. And if the game itself has an interesting mechanic or some other draw, then other people will sometimes advertise it for you via doing youtube videos, blog posts, etc.
Hopefully that's helpful!