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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/jacques230	2023-03-31	Post	`6`	---	German, English, Russian
u/comfortabletext4439	2023-04-09	Post	`6`	---	German, English, Russian
u/gospodingio	2023-05-08	Post	`6`	---	German, English, Ukrainian
u/xarabadah	2023-05-21	Post	`6`	---	German, English, Russian
u/miserable_brush3169	2023-05-24	Post	`6`	---	German, English, Russian

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