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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/greystone717	2020-09-06	Post	11	German, English, Russian	Polish
u/shiniri	2020-09-05	Post	9	German, English, Russian (Native)	---
u/thegangatimes	2020-09-13	Post	9	German, English, Russian	---
u/_rot_orange_gruen_	2020-09-15	Post	9	German (C1), English, Russian	---
u/solaaoi99	2020-09-16	Post	9	German (Native), English, Russian	---

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

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