I would like to remove/edit the hamburger menu, but I don’t know how to.
Plus, preferably I would like to remove my page titles from the bottom of the page as well. They don’t have any purpose being there.
By default of the theme, it cannot be removed. The theme will need to be customized.
For the footer, you can update it in the customizer. You can follow the path below:
Appearance > Customize > Footer Options > Footer Copyright Beside Option > Choose hide from the background