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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/gawkgawkmenow	2025-05-18	Post	`5`	English	Portuguese
u/fun_pension1023	2025-06-15	Post	`5`	English	Portuguese
u/sea_leadership_5178	2025-04-23	Post	`5`	English	Portuguese
u/sun-kithed	2025-06-03	Post	`5`	English (Native)	Portuguese
u/long-network3499	2025-04-28	Post	`5`	English (Native)	Portuguese

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