Charger
Need a C charger for my new IPhone 12 Pro Max
no you don't you can use any charger in the universe with the lighting port connector all previous cable and ac charger works just fine
if you wish to purchase an usb-c ac charger apple sell those though Buy 20W USB-C Power Adapter - Apple
you can also charge it by connecting it to a computer with and usb-c port or an ac charger from another manufactorer