To your last point departing anywhere from the western coast of Africa directly into the Atlantic Ocean if not for directed navigation you will eventually drift into northern Brazil provided you survive storms, do not sail during hurricane season, and have sufficient supplies to survive the voyage. Drifting from Africa to Brazil could take several months. So, this is certainly not a journey for a raft, though I vaguely recall somebody tried that experiment with a raft.

There are also cases where more sturdy migrant boats drift from Africa to Brazil. https://english.elpais.com/international/2024-04-17/boat-dri...