If you need free A1 materials, consider these legal options:
"Aspekte Neu" is a German language course for upper-intermediate to advanced learners (B1–C1), published by Ernst Klett Sprachen. Aspekte Neu A1 Pdf Free Download
Many US and European universities publish free German A1 course materials. If you need free A1 materials, consider these
"German A1 open textbook PDF" (this yields legal, faculty-reviewed content).You don’t need a PDF. A used physical copy or a previous edition is just as good. Many US and European universities publish free German