ah, i'm super sorry! my best guess is this could likely be an anti-virus issue, or, an issue with the download becoming corrupt.
if you aren't using it, I'd recommend using the itch.io desktop app - it's typically much better at handling corrupted downloads, and, extracting data in such a way that anti-virus doesn't get sad. it also lets you keep track of what games you have installed, and, easily update the game when we release new patches :)