Those early bitcoin doubler schemes around 2017, that's where I was exposed that bitcoin is being used by scammers. Not that it discourages me, but it open my eyes that there are a lot of criminals in the world that I'm going to get involved. So I should be careful and in turn, should give warnings to others not to fall for this trick.

Definitely, it's a expensive lesson to learn, nevertheless I'm happy that I have experience is, because if it, sooner or later I might be falling to a bigger scams in the future. So I started not to trust anyone, but do my own research and investigation.