Buddy, as a believer of free will, I would suggest that you and others like you would put down the idea of trying to control others. How would you feel if someone saw everything that you did and say "you know, I don't like what it is that you're doing, so I'm going to try and control what you do"? You wouldn't like that for very long.
People are going to decide as to how they spend their time, even at their own detriment. There's little you can do, all you can do is just suggest or advise. But you're looking for just straightforward convincing and control.
You have to be in your own lane.
