Preparing old MacBook Pro for trade-in issues - no disk utility options
I've gotten through all of the steps as described on https://support.apple.com/en-us/HT201065 but when I go forward with the last step, and attempt to erase my hard drive then reinstall macOS it seems to skip the disk utility step in which I erase my hard drive. Here's what happened:
I started on the first step of using disk utility to erase my Mac for intel-based Macs. When I start it up with simultaneously holding Command R, it presents the language selection screen as if starting all over.
What should I do next? This makes me think I didn't have to go through with all those other steps, but I want to protect my information and do this trade in process correctly.
MacBook Pro 15″, macOS 10.15