You see, i think my steam is linked to a specific email address. I don't remember the name of it. And I can't recover it, because I need the name of that email to recover. So I guess I'm stuck now with an account that I don't use and I wont be able to link it.
Ah that's super unfortunate. Unfortunately if your steam email is lost then that's a whole separate issue.
You can still recover it through Steam, though, but it just might take more time.
https://support.steampowered.com/kb_article.php?ref=5421-QTFB-3090