I need to downgrade from monterey to big sur...can you help

Do you have a Time Machine backup to Restore to/from?

https://eshop.macsales.com/blog/32972-time-machine-what-it-is-how-it-works-and-how-to-use-it-with-your-mac/

https://support.apple.com/guide/mac-help/revert-to-a-previous-macos-version-mh15216/10.14/mac/10.14

If not…

https://www.imore.com/how-downgrade-macos

This will WIPE ALL DATA and there is No Recovery - Period

To perform this action will require booting from a Bootable Installer.

This will have to be performed from a Qualifying Computer to run the version of macOS to be made on the Bootable Installer. Example : Bootable Installer of Big Sur would have to be done on a computer that Qualifies to run Big Sur.

Once that is done read on for preparing the Destination computer >> Only works on Intel Based Apple Computers.

Extra Special Notation regarding the Touch ID equipped Apple Computer. About Startup Security Utility and Must Enable from Recovery Mode the ability to boot from External Drive Before Attempting 

1 - Shutdown computer and disconnect all external drive Except the newly created Bootable Installer.

2- Restart and immediately hold the OPTION key until the Startup Manager appears and choose the USB Drive.

3 - It will present options >> Disk Utilities >> View >> View ALL attached Drives.

4 - Choose the Upper Most Drive ( not the volumes indented and list below ).

5 - The drive normally is called Apple Media or Apple SSD - that is the drive to Erase and format as APFS with the GUID Partition Map.

6 - Once that is done >> backup out of Disk Utilities and choose install macOS.

7 - Follow the prompts and it may automatically reboot several time.

8 - Upon a final reboot - Setup Assist will present with the newer version of macOS.

I am a new MAC user and the "automatic updates" option was on when I received the machine. I was not using Time Machine when the update occurred. I have since started using Time Machine but this is after the update to Monterey was completed. I now need to downgrade back to Big Sur. Is this possible?

It might be better to work though the issues in Monterey versus going back ?

Going back can be done but . . . can be an issue and will possibly take some down-time ?

Your option and can assist on either direction

Notation - if the computer came with Monterey pre-installed as New - the Apple Licence of Use prohibits downgrading to any version older than it came with as new.

Thank you for the reply. The Mac came with Big Sur and upgraded to Monterey. I would like to go back to Big Sur if possible. Again, thanks for the help.

I was afraid that this would be a hassle. let me see if I can come up with an easier solution. Can I get back to you if I need help downgrading?

Thanks

Of course/

Just post back in this question and will attempt to assist in whatever direction one wishes.

I need to downgrade from Monterey back to Catalina Big Sur the original

What is the method to download Monterey back to Catalina Big Sur, please help me, thanks.