As people have said before, there are so many, it's very difficult. I think, rather than worry about mass markets like Facebook, you might be better off finding and individually contacting people who you think will have a special interest in your game.
You're Indonesian, right? Maybe start with the local approach and contact Indonesian Youtubers, Twitch streamers, bloggers etc. who have an interest in indie games. Even if they don't have huge viewing figures, they will have an immediate interest in you as a developer, and making contacts is always good, and can lead to bigger things.