There is something else going on

Maybe it's not still on earth...

Now I want you to think, it's easy for you to look around yourself. That way and this way. There is even devices that help you see outside yourself better. But you don't look inside yourself. Looking inside yourself is very hard. It requires knives and cameras and doctors. That's why it's so hard for the government to get off their sorry asses and work on finding it,

I just want you to know.
We have explored more of our galaxy than we have of our oceans. Keep in mind this is a tiny planet compared to, say, Jupiter. And then there is the fact that NASA has equipment more advanced than undersea equipment, possibly due to all the danger down there.

Cos planets are WAAAAY bigger than a plane. Also, planets are not covered in ocean.

Because find those planets mostly by accident. Its different from trying to find one specific thing.

Because the ocean is scary

Much easier to find something out in nothing, than to find something in something