Performed comprehensive manual exploratory testing focused on real user behavior and end-to-end scenarios. Evaluated application stability, user experience, navigation, error handling, performance, and edge cases across the main user flows.The testing process uncovered issues related to data loss, navigation inconsistencies, missing error handling, performance degradation under heavy usage, and insufficient user feedback during critical actions. Each issue was documented in a detailed bug report including reproduction steps, expected and actual results, business impact assessment, and practical recommendations for improving the overall product quality and user experience.