how do you remove a legacy system extension that is not meant to be on macOS?
How do I bring MacBook back to new?
MacBook, macOS 11.5
Question marked as
https://support.apple.com/guide/mac-help/macos-recovery-a-mac-apple-silicon-mchl82829c17/mac
Gives you the option to wipe your machine as new with the M1 chip.
Command-R does it for Intel CPUs.
If you have data to rescue, and no bootable backup, and your machine does not boot, you may want to look at Target Disk Mode first:
https://support.apple.com/guide/mac-help/transfer-files-mac-computers-target-disk-mode-mchlp1443/mac