meta data og:image - How to add ?

I am using Gazette template, for meta data in header, I didn't see meta data og:image, and I would like to add meta data: og:image, please advise how to add that?

<meta property="og:title" content="ccccccc c" />
<meta property="og:type" content="website" />
<meta property="og:url" content="/" />
<meta property="og:site_name" content="gggggg" />