Use breadcrumbs to give users context and let them move back or up a level if they can't find what they want on the page (See the example block above this paragraph).
When not to use breadcrumbs
Don’t use breadcrumbs in transactional journeys as they can get in the way of the user completing the task.
How to use breadcrumbs
If the full breadcrumb trail doesn't fit the screen size, it can wrap onto 2 lines, but don't break a breadcrumb if it doesn't fit the line.