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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/kemangiau	2020-12-13	Post	5	German	English
u/10-digits	2020-10-31	Post	5	German (Native)	English
u/ptraci	2021-01-02	Post	5	German	English
u/bananajohn89	2020-12-08	Post	5	German	English
u/cat_230	2020-11-16	Post	5	German (B1)	English

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

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