High Prefect Drikus:
To become an Orc Raider, the appropriate level and token are required. Your level must be at least 20 to qualify to change profession. You need a token to prove you have passed the Test of the Orc Raider, as well.
I am satisfied with your level, but it seems that you have not passed the Test of the Orc Raider. To take the Test of the Orc Raider, go to Prefect Karukia of the Orc village He will tell you everything you need to know. If you pass the test and come back, I will change your profession. To get to the Orc village, first go to Gludio, then use a Gatekeeper.