i forget my phone password

You will need to follow a certain procedure to regain access to your iPhone .

If you're running iOS 15.2 or higher you can preform this procedure without a pc or Mac. See this link for further reference and instructions

How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support

If you're running an earlier iOS version, you will need to use a pc or Mac in order to regain access to your phone

See this link for further reference and instructions

If you've forgotten your iPhone passcode – Apple Support (UK)

No. When you have forgotten your iPhone passcode the only way to go is to follow the steps in the link I send in my earlier reaction. And yes, that will erase your iPhone, there is no other way unfortunately

Hello ~ Take a look…

If you forgot your iPhone passcode - Apple Support

How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support

~Katana-San~

Hello ~ No. Have you been backing up your iPhone?

~Katana-San~