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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/vega_moors	2023-01-19	Post	`7`	French	German, English
u/frequent-ad-3896	2023-01-30	Post	`7`	French (Native)	German, Polish
u/raven_haired_siren	2023-02-19	Post	`7`	French	German, English
u/hiagathe	2023-03-04	Post	`7`	French (Native)	German, English
u/qq1242510	2023-03-10	Post	`7`	French	German, English

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