I'm quite interested on this board game, but I live in a country that literally no one plays it

Create an account on online-go.com

Aside from the online options you've been given (which are good), are you a 100% certain that nobody's playing it in your country?

I assumed the same thing when I first started learning about the game over twenty years ago, and I found out that there was an email list for a group of players in a neighboring country, so I subscribed there and lurked. A few months later somebody else from my country joined and, instead of lurking, she did the smart thing and asked. And sure enough, somebody replied. Turns out there was a group that met weekly in a pub five blocks from my house.

So basically, I wouldn't totally discount the possibility that there's other people closer to you than you think.

Definitely recommend that you check out https://online-go.com/ or https://www.gokgs.com/ there are a lot of great places to play online!