I lost my passcode to unlock my Iphone 15 pro max

If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -

Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

Click on the link for instructions on how to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support

No one can send you a passcode to unlock your iPhone. It is encrypted on the iPhone itself.

If you have forgotten iPhone Passcode, you must use a computer with iTunes (Windows) or Finder (Mac) to erase it and set it up again.

The related article link at the top of this page has the directions you need to follow.