reset passcode
How can i recover my reset passcode?
iPhone 8 Plus, 14
You can't, unless you wrote it down and kept the info in a safe place.
If you have forgotten the passcode......
If your iPhone is running iOS 15.2 or higher........(it appears that it might be).......you can use the instructions linked just below which will not require the use of a Mac or PC:
How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support
If you are not sure which operating system is installed on your iPhone, please use the link below, which will require the use of a Mac or PC.
If you forgot your iPhone passcode - Apple Support
If you have a backup of the phone, you can use the backup to restore the data on the phone during the new setup.