libreoffice add row at the end of table

1- Put the mouse cursor on the LAST column of the LAST row;
2- Press TAB;

# This will create a new line at the end of your table

Here is what the above code is Doing:
1. It’s putting the mouse cursor on the last column of the last row.
2. It’s pressing the TAB key.

This will create a new line at the end of your table.