That’s a good strategy. For my main project, using a single YouTube video helped. Also posting occasionally in Reddit and Facebook. Got some reviews and comments and now itch.io is automatically showing the game to new players in the platform.
Viewing post in How to gain followers and promote my games.
It was a video of the game playing itself (Autoplay — it’s a rhythm game) with a Touhou Project song. It doesn’t have likes or comments; for some reason, people don’t interact with the video — they just go straight to the game. The same happens with the Reddit post: it helped people find the game, but interaction is low. They just click the link or google it. And regarding indexation: getting indexed on itch was easier in previous years, but now it’s stricter.