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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/spreadlawstopwar	2020-09-06	Post	`7`	German	English, French
u/scorederlord	2020-06-27	Post	`7`	German	English, French
u/e_frog25	2020-07-15	Post	`7`	German (Native)	English, French
u/apmcsl	2020-07-19	Post	`7`	German (Native)	English, French
u/justliamxd	2020-08-31	Post	`5`	German	English

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