Recover my files after CLEAN command for boot volume in diskpart

[Windows 11]

My Windows 11 laptop became unresponsive and would only boot into safe mode 2 days ago. After many attempts and research, I was told to use DISKPART from elevated command prompt to CLEAN only the small 650mb BOOT volume after selecting it. That is what I did - with the plan to rebuild it from installation media USB drive today. I expected only the selected small volume (1 of 6 volumes on the hard drive and not the enormous 900GB volume where my files and the main Windows installation were) - but when booting from the newly-created USB drive today - here is what I am getting:LIST DISK shows on

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