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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/m4ru21	2020-09-05	Post	`7`	French (Native)	German, Russian
u/ayelhayel	2020-06-19	Post	`7`	French	German, English
u/47yamaha	2020-08-19	Post	`7`	French (Native)	German, English
u/immastealyogranny	2020-08-09	Post	`7`	French (B2)	German, English
u/blaue-rose	2020-07-21	Post	`7`	French (B2)	German, Russian

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