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

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/swordmasterman	2023-03-25	Post	`7`	Portuguese	English, Spanish
u/saltytapwat3r	2023-03-30	Post	`7`	Portuguese (Native)	English, Spanish
u/holiday-restaurant30	2023-04-19	Post	`7`	Portuguese	English, Spanish
u/frokster	2023-05-01	Post	`7`	Portuguese	English, Spanish
u/rodrikdareader	2023-05-02	Post	`7`	Portuguese	English, Spanish

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