I intend on returning my Macbook Air M1 for a refund today and have already deleted the data in the computer through the "Erase Data" option in recovery mode. I am now reinstalling macOS and am wondering if I should be good after reinstalling the OS in regards to my personal data. I assume that after I erased all the data on the computer that all my personal data should be clear, including my iCloud information right? What's weird is that to reinstall the operating system I had to put my Wifi password and the computer recognized the wifi connection to be linked to an Apple account and I had to input what I believe is my iCloud email and password. I just want to get rid of this already and don't want to be in danger of leaving data in this.