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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/thefoxbob	2021-03-23	Post	`5`	Arabic	German
u/euphoric_clock2366	2021-02-21	Post	`5`	Arabic	German
u/thekyojinn	2021-02-13	Post	`5`	Arabic	German
u/youness1221	2021-05-03	Post	`5`	Arabic	German
u/striker379	2021-03-08	Post	`5`	Arabic	German

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