I want to reset my password on my iPhone?

If this is your device passcode here is an article If you forgot your iPhone passcode - Apple Support if it is Apple ID then use If you forgot your Apple ID password - Apple Support

if you just want to reset your passcode for your device and didn’t forget your current one then Go to settings > scroll down to Face ID & passcode and open that > click change passcode and do as prompted

[Edited by Moderator]

You would like to reset your password to what exactly?

Axel F.