How to make it so that when you enter a link in social networks, it displays the first image on the page?

Question

HTML

Hello, there was such a problem that when you enter a link in social networks, the second image of the site is displayed, and not the first one, the "Site Image" is not installed, it broke a long time ago and no one knows how to fix it, but this is not important. The main thing is how to display the first image when entering a link to the page.