How can I recover from `sudo chown -R username /`??

Looking back, I can't believe what I was thought...
I cannot remember anythings but one that I stopped it during that command.
For now, the Ubuntu Parallels VM can't be boot!!! Bootloader has gone..

I am anxiously asking you.. How can I recover it?

* Configuration *
Parallels VM: Ubuntu 24.04 (with Rosetta)
Host: MacOS Sequoia 15.0 (M2)