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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/raffaele1617	2020-11-19	Post	`8`	English, Spanish (C1)	Turkish
u/loved_by_a_rose	2021-01-17	Post	`8`	English (Native), Spanish (Native)	Turkish
u/no-relation3332	2020-12-23	Post	`8`	English (C2), Spanish (Native)	Turkish
u/motanz	2021-01-13	Post	`8`	English, Spanish (Native)	Turkish
u/cinnie88	2020-12-18	Post	`6`	English, Spanish	---

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