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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/sea_leadership_5178	2025-04-23	Post	`5`	English	Portuguese
u/jwaglang	2025-02-23	Post	`5`	English	Portuguese
u/practicaltomatillo21	2025-03-11	Post	`5`	English (Native)	Portuguese
u/aceofhearts111	2025-02-19	Post	`5`	English	Portuguese
u/murky_bodybuilder_51	2025-04-14	Post	`5`	English (C1)	Portuguese

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