I try to be friends with any child who doesn't know me.
How do you become friends with children?
If I see them on the street, I invite them home to play.
It's good that you're friendly and nice to kids. Make sure you invite them at your place with their parent's permission.
No need. I have to feel them out myself first.
Are you being creepy with this children? If so you should stop being friends with them right now and leave them alone.