Install the Metatag contributed module. It is the standard solution for managing meta tags in Drupal and has been maintained for years with comprehensive features.
Configure meta tag defaults for different contexts like front page, node bundles, and taxonomy terms. Use tokens to pull values from fields automatically, so a node’s meta description can come from a summary field without manual entry.
Metatag supports Open Graph for Facebook, Twitter cards, Dublin Core, and many more standards. Install submodules for each type you need. For individual overrides, editors can set custom meta tags on specific content when the default is not suitable. Pair Metatag with Schema.org Metatag for structured data support. Together they give Drupal excellent SEO metadata capabilities out of the box, covering both traditional meta tags and modern structured data.