Can't remember my passcode for iphone 12 promax

Please spend a bit more time to think about what that password might before you are forced to erase all the data on the phone and start over again.

If you can't remember the password, you can follow the steps in the Apple Support document linked just above your name.

If you would prefer to reset the phone without using a computer, you can follow the instructions in this Apple Support document:

How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support