Why Justinian failed from conquering the old western empire?

Justinian's attempts to reconquer the Western Roman Empire ultimately failed due to several factors, including overstretched military resources, financial constraints, and internal resistance in the territories he sought to reclaim. His campaigns, while initially successful, faced challenges such as the outbreak of the Plague of Justinian, which weakened armies and devastated populations. Additionally, the lack of sustainable governance in reconquered regions led to instability and revolts, making it difficult to maintain control. Ultimately, these combined issues hindered his ambitions for a restored Roman Empire.