Cannot take away methods folder from a defective set up of Mac Catalina

I had Mojave put in on my late 2012 Mac mini, and tried to put in Catalina on it utilizing the web restoration mode. This set up was made to the /Volumes/Native disc, and it failed miserably not permitting me to reboot correctly. I used to be then ready to return to a Mojave set up, and continued with a profitable set up from an USB drive to the /Volumes/SSDdisc, and I am now attempting to cleanup the rubbish from the opposite set up.

I’ve learn and tried varied suggestions and methods like including the terminal to have Full Disc Entry (I’ve added that to /bin/rm, /bin/zsh and /usr/native/bin/bash as properly), and I’ve run csrutil disable a number of occasions from Restoration mode. I’ve additionally eliminated the ACL entry stating: 0: group:everybody deny delete from the folders. I am nonetheless not in a position to take away the folders: Functions, System, Library, Volumes and Customers.

I’ve learn, and tried the information of those posts too, however to no avail:

The final try from terminal appeared like this:

my-mac-mini:~ myuser$ sudo -s /bin/zsh
root@my-mac-mini ~ # cd /Volumes/Native
root@my-mac-mini Native # ls -ledO@ Functions System Customers Library Volumes
drwxrwxrwx+ 2 root  admin  sunlnk     64 Feb 25 00:10 Functions
 0: consumer:myuser enable record,add_file,search,add_subdirectory,delete_child,readattr,writeattr,readextattr,writeextattr,readsecurity
drwxrwxrwx  2 root  wheel  sunlnk     64 Mar 12 20:51 Library
drwxrwxrwx@ 3 root  wheel  restricted 96 Mar 12 20:51 System
    com.apple.rootless   0 
drwxrwxrwx  2 root  admin  -          64 Mar 12 20:51 Customers
drwxrwxrwx  2 root  wheel  hidden     64 Mar 12 21:16 Volumes
root@my-mac-mini Native # 
root@my-mac-mini Native # csrutil standing                             
System Integrity Safety standing: disabled.
root@my-mac-mini Native # 
root@my-mac-mini Native # chflags nohidden Volumes
root@my-mac-mini Native # chflags -R norestricted System
root@my-mac-mini Native # chflags nosunlink Library
root@my-mac-mini Native # chflags nosunlink Functions
root@my-mac-mini Native # ls -ledO@ Functions System Customers Library Volumes
drwxrwxrwx+ 2 root  admin  - 64 Feb 25 00:10 Functions
 0: consumer:myuser enable record,add_file,search,add_subdirectory,delete_child,readattr,writeattr,readextattr,writeextattr,readsecurity
drwxrwxrwx  2 root  wheel  - 64 Mar 12 20:51 Library
drwxrwxrwx@ 3 root  wheel  - 96 Mar 12 20:51 System
        com.apple.rootless       0
drwxrwxrwx  2 root  admin  - 64 Mar 12 20:51 Customers
drwxrwxrwx  2 root  wheel  - 64 Mar 12 21:16 Volumes
root@my-mac-mini Native # rm -rf Functions System Volumes Library Customers Volumes
rm: Functions: Operation not permitted
rm: System/Library/PreinstalledAssetsV2: Operation not permitted
rm: System/Library/Speech: Operation not permitted
rm: System/Library/AssetsV2: Operation not permitted
rm: System/Library/Belongings: Operation not permitted
rm: System/Library/Caches: Operation not permitted
rm: System/Library: Listing not empty
rm: System: Listing not empty
rm: Volumes: Operation not permitted
rm: Library: Operation not permitted
rm: Customers: Operation not permitted
rm: Volumes: Operation not permitted
root@my-mac-mini Native #

So now I am working out of choices, and surprise in case you’re in a position to assist me take away these folders (and the sub folders from System/Library)