To rank your website in position zero, you should first decide which search queries you want to target. Because position zero listings only appear for search queries in which a user is asking a question, you shouldn’t target generic short-tail keywords. Instead, you should target questions commonly asked by your website’s audience.
Most featured snippets are triggered by search queries starting with either “who,” “what,” “when,” “where,” “why,” and “how.” Therefore, you should target relevant search queries beginning with one of these six words. Think about what questions your website’s audience frequently ask and target those search queries with your position zero ranking strategy.
https://m16marketing.com/digital-marketing-blog/how-to-rank-your-website-in-position-zero-on-google/