Google Search works hard to understand the content of a page. You can help us by providing explicit clues about the meaning of a page to Google by including structured data on the page. Structured data is a standardized format for providing information about a page and classifying the page content; for example, on a recipe page, what are the ingredients, the cooking time and temperature, the calories, and so on.

from https://developers.google.com/search/docs/guides/intro-structured-data

Use JSON-LD structured page for Google Search results?

Reference:

• https://schema.org/WebPage
• https://schema.org/ItemPage
• https://schema.org/Event
• more, see https://schema.org/docs/schemas.html