Examples:

• After the expensive renovation, the company found itself deep in the red.
• Our restaurant has been in the red since the pandemic started.
• If we don't cut costs soon, we'll be in the red by the end of the quarter.
• Despite high sales, the business is still in the red due to mismanagement.
• We need to find new investors to help us get out of the red.
• Her personal finances have been in the red ever since she lost her job.
• The charity is in the red and might have to close its doors.
• The film studio was in the red until their latest blockbuster was released.
• They're in the red because of a major drop in product demand.
• His credit card bills are so high that he's constantly in the red.
• In the Red Army the best soldier does not mean at all the most submissive and uncomplaining.