For me, the OP's interpretation is very questionable or at least hasty. The first reason that comes to mind is that there is less recruitment at the end of the year. Because in the above statistics (due to lack of data?) only the data within the year is possible, such rhythms are not recorded.

I talk to HR people from different companies (in Berlin) from time to time and they still complain about the lack of skilled workers. Lastly, there is an armada of economic institutes in Germany that do not foresee a "job market crash" either. Jobs are a lagging indicator and the German economy is still growing. Only next year will there be a slight recession.

P.S.: For a good statistical analysis, the data source should be mentioned (which website), different sources (e.g. different portals, different source). A data lake otherwise does not make much for an alarmist analysis.