Tried the following endpoints:
https://graph.facebook.com/v2.6/{video-id}/video_insights/total_video_views?access_token={token}
https://graph.facebook.com/v2.6/{video-id}/video_insights?access_token={token-id}&metric=total_video_views
But I still getting no data results in both endpoints:
{
"data": [
]
}
And my videos has some views (visualizações):
Thanks in advance.

I'm gonna paste the words from the API documentation below, but I think, since it's a video, you're calling to the wrong site.
"Host URL Almost all requests are passed to the graph.facebook.com host URL. The single exception is video uploads, which use graph-video.facebook.com."
And here's a link to the page: https://developers.facebook.com/docs/graph-api/overview/#structure