My Mac still stays in the circle with a line through it and doesn’t go beyond

brainson Said:

"My Mac still stays in the circle with a line through it and doesn’t go beyond"

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Thank you for the photo.

Circle with a Link Through it:

Go Here: If your Mac Starts Up to a Circle with a Line Through it - Apple Support

Som Restore or Reinstall Anew:

A. Restoring the macOS:

Go Here: How to Reinstall macOS from macOS Recovery - Apple Support

Important: First, Back Up your Mac:

Prior to all of this, do you Create a Time Machine backup of your Mac? If so restore your Mac from it. If not, then take this as a learning experience, knowing to always create a backup of your Mac, prior to making any major changes to it (i.e. new install)

B. Reinstalling the macOS Anew:

See if this Site Helps: How to Reinstall the macOS Anew - No TMB Prior to Upgrade - User Tip. Format the hard drive with the applicable macOS, on step D.

In Depth:

Pretty much, it is a matter of:

1. Erasing: and formatting your hard drive to APFS
2. Installing: [the applicable macOS] via a USB Bootable Installer
3. Restoring: info from a Time Machine Backup, using Migration Assistant