Here is a list of therapy types currently in use in Germany for healing trauma (ptsd and cptsd), or at least in conjunction with other types. https://www.therapie.de/psyche/info/index/therapie/traumatherapie/psychotherapie-bei-traumatisierungen/ Includes a description of each type.
Note that on these types of websites they tend to talk about trauma-healing without specifying whether for ptsd or cptsd. If you're looking for a therapist, you need to stipulate cptsd. If they are qualified for cptsd, they will know the difference.