I found the following users who may fit your language exchange criteria:

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/legitimate_heat3903	2024-05-28	Post	`8`	German, English	Turkish
u/no_bar_4067	2024-06-11	Post	`8`	German (B1), English (C2)	Turkish
u/gsusqrist	2024-08-15	Post	`8`	German, English (C1)	Turkish
u/olejr98v2	2024-05-22	Post	`6`	German, English	---
u/elias_etranger	2024-05-22	Post	`6`	German (B2), English (B2)	---

Please feel free to comment on the above posts to get in contact with their authors.