Deleted all users in WSL

I use Wsl Ubuntu 20.04 LTS.I don't know why but all users were deleted.I created a new user. I wish I had not done

passwd:

tetemp:x:1000:100::/home/tetemp:

and now

$ adduser rootadduser: Only root may add a user or group to the system.$ sudo adduser rootsudo: unknown user: rootsudo: unable to initialize policy plugin

I can't change passwd because it is read only.

-How can i get root back.
-Can I delete tetemp? (wsl starts as root if i can)