iqbaluddin Hi,
In terms of the first issue (Duplicate, Google chose different canonical than user) our team recommend that you try revalidate the URLs in Console. However, even if you continue to see the warning, this is not something to be concerned about. The URLs being flagged are Humix embed URLs, so they consist of just the video and nothing more. We don't want those embed URLs to be indexed and show up in search queries, the Humix dedicated video pages and the pub's articles containing the videos are the preferred pages to index.
In terms of the other indexing issue, this is normal and to be expected. The Humix embed videos will only be indexed from their original source. The videos not indexing isn't an issue you need to be concerned about