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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/educationalactive858	2023-11-10	Post	`8`	English, Spanish	Russian
u/cerdacochina666	2023-11-15	Post	`8`	English, Spanish (Native)	Russian
u/imbaesick	2023-12-08	Post	`8`	English (Native), Spanish	Russian
u/izhaaar	2023-12-14	Post	`8`	English (C1), Spanish (Native)	Russian
u/laminastic	2023-12-14	Post	`8`	English, Spanish	Russian

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