I've created a page for my game, UNSIGHTED, a few weeks ago, but it still does not show up anywhere when searching. The only way to find it is by using the link: https://studio-pixel-punk.itch.io/unsighted

What am I missing here?

Downloads, that's what. :) Games with no downloads and no browser-playable files don't show up in searches. Put something there, anything. Desktop wallpapers at least.

We don't make pre-release pages available in search right now. (Search is getting an overhaul though). If you want to be listed somewhere while your game has nothing to be downloaded or played you can post a devlog and you'll appear on the devlogs page