Hey Forks are you worried when it comes to Social media, your website will only show the link without a proper or no thumbnail displays. You are at the right place to fix the issue.
Social Media's like Facebook, Whatapps, Twitter etc need a good snippet of your website image, title and description. Will show you have to add those sweet snippet on your website or blog.
On your website script header you need to add this code
Copy this code and paste appropriately and edit the title, description and image URL for the article.
For WordPress users, download Yoast Seo plugin to solve this issues