Let me dumb this down to your level.
"Double" is a word for when you have two of something.
You use one standard when looking at whether the media is lying.
You use another standard when looking at whether I'm lying.
1+1=2
So, you're using a double standard.
That means that your logic is complete bullshit. End of story.
A child could understand this. If you can't, you're either brain damaged or trolling.