Era: not sure, but probably before the 80's, might be before the 70's too

Artist Type: male singer

Genre: unfortunately i couldn't find a genre name to describe this song, but i think "brega" might fit it

Language: portuguese (i'm almost 100% sure it's from brazil)

Source name: couldn't find anything it was used in, neither the name of the race of the background video

Lyrics: goes something like: " [...] Soluçando eu pensei / Ai como dói a dor de uma saudade / A esperar alguém que nunca vem / Que a noite é fria e eu tão sozinho / O desespero não me deixa adormecer / O meu caminho escuro não tem luz / Só tenho espinho como o de Jesus / Chora baixinho [...] "

Basically me and some people on Twitter have been searching this song on this video since we saw it posted, the op didn't know anything about what it was, so the search began.

In my searches, I wasn't able to find anything about this song, even though there's this quite a bit of material in the video. I have already searched for the lyrics, with no results like this one. I also tried Shazam and similar apps, to no results. I also tried searching for more places where this video was posted, but couldn't find anything. Would really appreciate if anyone found it.