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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/idkskehebejainaqk	2021-08-28	Post	`5`	Spanish (B2)	German
u/marcohiramm	2021-09-03	Post	`5`	Spanish (Native)	German
u/battacatta	2021-07-02	Post	`5`	Spanish (C1)	German
u/mundane-lifeguard-87	2021-07-18	Post	`5`	Spanish (Native)	German
u/nice_needleworker855	2021-07-31	Post	`5`	Spanish (Native)	German

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