you are not alone in this, the internet is full of noise. I've had my own struggles during promotions of my content.

you sort of just have to find the thing that works for you, you need to build your audience and sometimes that's just no easy feat. 

So I can't tell you how to market your game, but I can tell you the one thing never to do. Never anger a niche audience, you will screw yourself.

having said that, have you tried twitter, or simply making a devlog here on itch?

For Reddit, it depend where you're posting. In my experience: r/gaming and r/Steam are a Big No, they will ban your post or you if you promote. But r/IndieDev and r/IndieGaming are actually good. The trick is to present your game and ask for feedback, include screenshots and link youtube gameplay video and it should pass. Don't spam of course.

Another forum, https://forums.tigsource.com/index.php. I have never been able to get throught their registration process... :-(

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.