Erase data, not apps to give away MacBookPro
Most of the instructions I am finding are for completely wiping the hard drive, but I want to gift my 2019 MacBook Pro to a friend. I max'd out at HighSierra OS10.13.6, so recently upgraded. Can someone point me to directions for erasing the personal data, passwords and other access bits, but leaving the programs and essential system files intact? Thank you!