Calibration on iPad Air 5th gen

Hi!, I'm a digital artist I work mainly on the iPad, using ProCreate. Tho I've notice recently that the colors I use on my iPad look way darker in other screens (iPhone/Mac/Android devices...). I've been looking up tutorials on how to calibrate the iPad correctly, they all say basically go to Settings>Display & Brightness>Advanced tho the "Advanced" option doesn't appear. In the tutorial said that it required at leat the IOS 16 and my iPad has the IOS 17.6.1 so I have no idea on how to calibrate it. Please help :(