Why arent the ufos landing?

It is kind of odd that we have all these videos of them flying around. Most of the footage is blurry or far away. Small clips. Some almost fly like they are alive. I have even started seeing ufos at night. They all fly so high its hard to see them. Why aren’t any of them landing? Or why dont they fly low enough to get clear evidence? We know they are there, why don’t they make contact? How is it still a secret??