A:AnswerI have a 2021 MacBook Pro M1 Max. The HDMI port works but neither the USB-A nor USB-C appears to be compatible as I tried two different adapters. The Air may have different results.
A:AnswerYes. Some streaming services may restrict screen size but unless the content provider places those limitations this will allow full screen presentation from iPad to television.
A:AnswerNo this is a USB C adapter so it plugs into a MacBook not into an iPhone.
You may want to go to a store with your phone, explain your need and get a recommendation on the best adapter for you.