I'm not even an advanced Word / Google Doc user.
Are we gonna wait for 100 more years for it to be good?
OpenOffice has been effectively dead for many years (though, maddeningly, Apache continues to publish it and squat the trademark); LibreOffice is the mainline where development continues.
LibreOffice is the actively developed fork.
There's a nice diagram on Wikipedia: https://en.wikipedia.org/wiki/OpenOffice.org#Forks_and_deriv...