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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/junkjanaki	2022-06-15	Post	`8`	German, English (Native)	Spanish
u/yuna92	2022-06-15	Post	`8`	German (Native), English (Native)	Spanish
u/pablo_zitronenkuchen	2022-06-17	Post	`8`	German, English	Spanish
u/_white_wizard	2022-06-23	Post	`8`	German, English	Spanish
u/hot-barracuda1674	2022-07-17	Post	`8`	German (Native), English	Spanish

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