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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/anxious-rabbit-6912	2022-08-17	Post	`7`	German (C1)	German, English
u/flying_turttle	2022-09-05	Post	`7`	German (B1)	German, English
u/andrzej_200	2022-09-13	Post	`7`	German	German, English
u/yeetingandtweeting	2022-10-16	Post	`7`	German (B2)	German, English
u/liberator-	2022-09-27	Post	`5`	German (A2)	German

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