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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/ppaauulinute	2023-11-05	Post	`8`	English, French	Russian
u/iseeearth	2023-12-01	Post	`8`	English (C1), French (Native)	Russian
u/possible-document-72	2023-12-04	Post	`8`	English, French (B2)	Russian
u/individual-dot884	2023-12-07	Post	`8`	English (C1), French (B2)	Russian
u/electronic-stick-291	2023-12-11	Post	`8`	English, French	Russian

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