Many roads lead to Rome. And at least as many lead to a professorship in the German academic system. It is important to note that the path to a professorship in Germany depends on many factors, including the department. The career path is not always transparent. It is therefore advisable to familiarize yourself with the specific requirements and procedures at an early stage and to seek appropriate advice and support from experienced colleagues or a career counseling to take advantage of this.
The following examples could help you get there.