Unfortunately, as of now, entrances data is not directly available via Google Analytics 4 Reporting API. The GA4 Reporting API has its own set of metrics and dimensions that it supports, and currently, it does not include entrances. It’s important to remember that the API and the Google Analytics interface don’t always offer the same data. The Google Analytics team is constantly updating and expanding the functionality of Google Analytics 4, so it’s possible that this feature could be added in the future. I recommend checking their documentation regularly for updates.