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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/alangedzik	2020-08-11	Post	`8`	English, Turkish (Native)	Russian
u/kobeoncount	2020-07-06	Post	`8`	English, Turkish	Russian
u/mecrentacar	2020-07-16	Post	`6`	English, Turkish (Native)	---
u/grouchy-explorer	2020-05-27	Post	`6`	English, Turkish	---
u/gullperi	2020-08-15	Post	`6`	English (B2), Turkish (Native)	---