SEO and Embed videos


I would like some help please.

Google have not indexed my website, you cant find my website on Google.

Also, I would like to embed my vidoes into the website, rather than using YouTube links.

My Embedded YouTube Video

    <h1>My Embedded YouTube Video</h1>
    <iframe width="560" height="315" src="" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>