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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/hvitto	2021-02-16	Post	8	German, English	Portuguese
u/sevsevn	2021-02-12	Post	8	German (B2), English (Native)	Portuguese
u/pad-senshu	2021-02-21	Post	8	German (Native), English	Portuguese
u/querschlaeger_	2021-01-13	Post	6	German, English	---
u/anangryyordle	2021-02-13	Post	6	German, English	---

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

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