How do you get your game's trailer on itch.io's official channel. I thought it was based on popularity but itch.io is promoting less popular games like this -https://youtu.be/-lwSlnTnUiw

Heya,

Someone can correct me if I'm wrong, but I don't believe there's any one method. It's just what itch.io may decide to personally promote on a whim if it catches their eye, ranging from popular, to lesser known games.

That said, you can ping the official account on Twitter or Mastodon with a link to your game and/or trailer.