Dear @Zee Zita,
Nice to see you are using the platform so actively.
I found this link from uni-assist, where you can check deadlines: https://www.uni-assist.de/en/how-to-apply/plan-your-application/deadlines-processing-time/?no_cache=1
Or, as an example, this is an information sheet on application procedures from Humboldt University, Berlin: https://www.hu-berlin.de/de/studium/bewerbung/formulare/engl-assist.pdf
From my experience, it can take a while to get a response from universities, as there are many applicants. But it's best you check on their website, or reach out to the university's student support service - they will be glad to help!
Please let us know if you have any more questions.