Debugging Protractor tests for Selenium test automation is essential for ensuring the quality of web applications by addressing issues and bugs. This tutorial offers insights into common failure scenarios like Expectation Failure, WebDriver Failures, Protractor Angular Failures, and Timeout Failures, while explaining methods to debug these issues using Protractor's pause, debugger, and screenshot methods. The article highlights the use of online platforms like LambdaTest for scaling testing efforts across multiple browsers and operating systems, emphasizing the benefits of cloud-based Selenium Grids in optimizing testing infrastructure and coverage. Through detailed explanations and practical examples, the tutorial guides users in effectively debugging Protractor tests, enhancing the reliability of their automated test suites.