Use the Head component in your pages

import Head from "@docusaurus/Head";

export default function MyPage() {
  return (
    <>
      <Head>
        <meta
          property="og:image"
          content="https://mosaic.praveenjuge.com/use?url=https%3A%2F%2Fyourwebsite.com%2Fyour_slug"
        />
      </Head>
      <div>Your content</div>
    </>
  );
}