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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/keysure4456	2021-04-19	Post	5	Japanese	German
u/alphabetsalad	2021-02-09	Post	5	Japanese	Polish
u/officialhaethus	2021-02-03	Post	4	---	German, Polish
u/languagelearner23	2021-02-04	Post	3	Japanese	---
u/a1632	2021-04-09	Post	3	Japanese (Native)	---

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

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