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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/das_reichtangle	2020-07-11	Post	5	English	Russian
u/apmcsl	2020-07-19	Post	5	English (C1)	Russian
u/yungguappo	2020-06-11	Post	5	English	Russian
u/potato_pirates	2020-07-28	Post	5	English	Russian
u/xsid06	2020-07-17	Post	5	English (Native)	Russian

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