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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/polyglotmqz	2021-02-05	Post	`9`	Arabic, Spanish, Chinese	---
u/rip32milton	2021-03-30	Post	`6`	Spanish, Chinese	---
u/saifalimousa	2021-03-17	Post	`6`	Arabic, Persian	---
u/redditlover91	2021-03-02	Post	`6`	Arabic, Spanish (Native)	---
u/zxcvq2werty	2021-01-27	Post	`6`	Spanish, Chinese	---

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