[Wolfgang]

You can find trauma therapists on the following lists: 1) http://www.dgptw.de/beratungsstelle/traumatherapeutinnen.html

 2) www.emdria.de

3) a little list of German therapists with qualifications from the Swiss Institute for Psychotraumatology http://www.psychotraumatologie-sipt.ch/therapeuten/deutschland/
4) and a longer list of Swiss therapists, some of whom are close enough to be of interest to those who live in southern Germany: http://www.psychotraumatologie-sipt.ch/therapeuten/ostschweiz/

5) https://www.therapie.de/psychotherapie/-verfahren-/traumatherapie/

Note that not all trauma therapists are on these lists and not all therapists on the lists are a good fit for everyone.