Air traffic control.

I for the first completed a flight on the advanced server. The ATC was good and I want to be an ATC there because I tried to see it from the ATC point of view because all that planes was hard to control. I controlled on playground but it didn’t work out and I tried to get on the advance server ATC but it didn’t let me. Why?

you ahve to pass a test to become an advanced controller

You must be tested to become a part of IFATC (advanced server controller team). Contact a recruiter such as @anon66442947.