How to set homepage to example.com or example.com/home?

Hi I'm new CMS and my current homepage is set to example.com/grav
Where would I got about changing it to just example.com or example.com/home

Whenever I type in example.com it just brings it to an index.html I have in /var/www/html, and when I type in example.com/grav, I get my homepage with default antimatter theme.

Nvm got it working it was just add /grav/ in the directory path in the sites-enabled apache2 conf files