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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/olejr98v2	2025-01-05	Post	`12`	German, Spanish, Russian, Ukrainian	---
u/olexanderch	2024-11-07	Post	`11`	German, Russian (Native), Ukrainian (Native)	English
u/gustavkeitel	2024-12-14	Post	`9`	German (B1), Russian, Ukrainian	---
u/hvitto	2025-01-07	Post	`9`	German, Spanish, Russian	---
u/kirillpzk	2024-11-03	Post	`8`	Russian, Ukrainian	English

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