Chosen Solution

I have been trying to log on to my MacBook Pro but the computer doesn’t seem to recognize my admin account. The issue happened before I updated to Mac OS Catalina and now I can’t use AppleSetupDone in terminal to recover the admin account. When I try to mount in terminal the computer displays a message saying read/write mode. How can I use the terminal without being in read/write mode and use the command AppleSetupDone?

What happens when you boot up under an external drive? Are you able to gain access to the internal drive or are you still blocked?