Google Ranking Factor – Breadcrumbs
A breadcrumb is a navigation element usually located near the top of a page, just below the header.
They normally contain the navigation pathway that was followed to reach a given page, and are especially useful for on websites with complex or very deep navigation trees.
They are designed to aid the user in finding the way back to any given point in their journey in click depth.
Websites with deep navigation trees therefore probably should make use of them, and may receive a negative consideration if none was available.
Another benefit to having breadcrumbs for users is that it provides another set of crawlable links and will positively contribute to a website’s internal link profile as reported in Google Search Console.