Is the Statement of Purpose mandatory for every country in Germany/Singapore for a Master's?

It depends. A Statement of Purpose (SOP) is not mandatory for every country, but many universities - especially in Germany - require it as part of the application (often called a "Motivationsschreiben"). In Singapore, an SOP is not always compulsory, but submitting one can strengthen your application.

Requirements vary by university and program. For your Master's applications in Germany and Singapore, check each institution's current criteria.