Re-instal of MacOs could not find disk even though Disk Utility verified disk: 2, 128 ssd is Ok.

When you get Yosemite reinstalled, open the App Store Updates page and download and install

any available updates.

If you want to go back to Big Sur I would recommend upgrading to macOS High Sierra.

Open your Safari browser and click on this link,

How to get old versions of macOS – Apple Support

Go to the Download OS section and click on macOS High Sierra.

Before upgrading make a full back up of your Mac.

Check that third party apps you use have updates available for the new OS.

https://roaringapps.com

Check that your printers/ scanners etc have updated drivers and software available for the new OS.

Connect your mac to your router via cable rather than rely on WiFi.

Do not use your mac while it is downloading

and do not use any other devices that share the same internet connection.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS ******.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

If you want to install Big Sur, open Safari and click on the link below.

How to upgrade to macOS Big Sur - Apple Support

If you are considering upgrading to Catalina or Big Sur be warned they do not support 32bit apps.

Your Mac is probably running 32bit apps and these will need to be updated to 64bit apps,

some updates may be free, some may be paid. Use this app to discover which apps you have

are 32bit, https://www.stclairsoft.com/Go64/ then contact the developers of the software to see

if they are offering 64bit updates.

If you were running macOS Big Sur then your mac would be running on the APFS file system.

Mac OS X Yosemite only runs on disks formatted as Mac OS Extended (Journaled) using the HFS+

file system.

Any OS X older than El Capitan such as Yosemite cannot see APFS formatted drives.

What you need to do is reformat the Disk as Mac OS Extended (Journaled).

Restart your mac while pressing and holding down the Command and R keys so you boot up to your

Recovery HD.

From the Utilities panel click on Disk Utility and press Continue.

Click on View in the menubar and select Show All Devices.

On the left side of Disk Utility highlight the Disk not any of the indented Volumes or Containers.

The Disk will probably be called Apple SSD… or similar, click on that.

Click on Erase.

Format: Mac OS Extended (Journaled)

Scheme: GUID Partition Map.

Click Erase.

When Done quit Disk Utility.

Click on Install OS press Continue.

The mac should now connect with Apples Servers and download the OS.

Make sure your mac is connected to your router via cable.