アカウントに入れません

Solution

I also changed something and it was looking like loop back always when I tried to log in, but the solution is next:

1. When you are on login screen open TTY by pressing Ctrl+Alt+F1, if you have enabled functional keys press Ctrl+Alt+Fn+F1. Login to your account on TTY session using your login credentials.
2. In TTY session type command: sudo su and press Enter.
3. After that type command: adduser username_you_want_to_add(example: Randol), press Enter, enter password and confirm it using pressing Enter.
4. Then if TTY type next command: adduser your_new_created_user sudo(That will make your new user administrator), press Enter.
5. Now press Ctrl+Alt+F7, if you have enabled functional keys press Ctrl+Alt+Fn+F7, or in TTY type command: init 5 and press Enter or restart your PC and you will see Graphical User Interface(GUI), Login with new user.

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Optional

If you want to delete your user open Terminal by pressing Ctrl+Alt+T

1. In terminal enter command: sudo deluser your_old_user, press Enter.
2. Type exit to close terminal.