You can always announce your own releases in Release Announcements, that's what the category is for. And if you have a Youtube video, there's a field for it on your game's edit form. Links to other places can be included in your game's metadata. Apart from that, come over to the Itch.io Discord server, maybe?
We only allow self promotion in Release Announcements. Your post must include an itch.io link whenh you post there, we don't allow people to dump links to other sites that are unrelated to itch.io. It's okay if your game isn't just released, no one is looking at your publish date.
