Take advantage of the feedback section of itch forums. Other creators can give feedback on your game's appeal and even play it for feedback
When I checked out your game's page I assumed it was a puzzle or adventure game by reading the tagline and story. But when I watched the trailer it made me think it was a lot more like Hollow Knight (the effects looked great by the way) I think the tagline and summary of your game could have better pointed to being a 'atmospheric 2D adventure' to give the game more kick and appeal. The story seemed fine but was very vague as to why I should play it when you could boast about it being a dark, mysterious 2D fighting game with bosses
If your goal was to make a Hollow Knight inspired game (just presuming here, sorry if I am wrong) then research how fans refer to their game such as using a souls-like or hollow-like style game in your tag to draw relevant fans in. Personally 'whimsical game about a cute character called "Chi". ' sounds generic to me but a 'atmospheric 2D hack n' slash inspired by Hollow Knight' will get more people interested if the genre or style of game resonates with them.
Take that with a grain of salt. Marketing is hard and I am not an expert - hope you get more traffic though