This answer has been updated here:
https://***.wefugees.de/815368/working-self-st%C3%A4ndig-with-aufenthaltsgestattung
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Dear @Hellothere ,
Freelance work is regarded as self-employment. It is possible to work as a self-employed person doing freelance work but you need to ask the permission of the Ausländerbehörde first.
Best,
Éanna