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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/aro3dp	2020-06-04	Post	`6`	German, English	---
u/suicidethrowaway889	2020-06-04	Post	`6`	German, English	---
u/jordanseeare	2020-06-05	Post	`6`	German, English	---
u/sar_i_i	2020-06-06	Post	`6`	German, English	---
u/yen4	2020-06-07	Post	`6`	Arabic, English	---