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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/chienedeglace	2021-11-08	Post	`7`	Polish	English, Spanish
u/--mi--ka	2021-09-26	Post	`5`	Polish (Native)	English
u/sinnerman-	2021-10-08	Post	`5`	Polish	English
u/callmewhatyouwantbby	2021-12-09	Post	`5`	Polish	English
u/loxkoxx	2021-12-01	Post	`5`	Polish (Native)	English

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