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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/wubbha	2021-11-10	Post	`5`	English	Spanish
u/jackoftherunes	2021-12-28	Post	`5`	English (C1)	Spanish
u/twinkytwinky1	2021-11-22	Post	`5`	English (C2)	Spanish
u/the8thhorcruxxx	2022-01-13	Post	`5`	English	Spanish
u/idgrella	2021-11-09	Post	`5`	English (Native)	Spanish

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