Cleaning a Mac to prepare it for recycling by Apple
I have a Macbook circa 2016. It told me that it was time to get a new one by freezing up on me. When I logged onto my account, the cursor would freeze. My partner's account was accessible and worked, but she is not an administrator. With online guidance, I used Command R on startup , navigated to Disc Utility, accessed Macintosh HD, and clicked the Erase button. When I restarted the computer, I got a flashing question mark in a folder. Does this mean all information is removed and I can safely recycle my Mac at Apple without fear of someone accessing my information. Thanks.
MacBook Pro 13″, macOS 12.6