Finding complete digital collections of magazine involves navigating the transition between its two major eras: the Digedags (1955–1975) and the Abrafaxe (1976–present). Digital Access Guide
Mosaik is currently published by (formerly part of Egmont). The Digedags rights are held by the Hannes Hegen Estate, while the Abrafaxe are active property.
After these steps, your "issue 1" will be superior to 99.9% of publicly available files. That is a true fix.
Rapidgator or uploadrocket links promising a single 500 MB file. That is impossible for 581 issues. A true fix is distributed as 581 separate PDFs or a well-structured ZIP/RAR archive.
: Approximately 42 English-language "Mosaic" books were published in the mid-1980s for international markets. Where to Purchase & Subscribe