Can I use a different menu for mobile?
In most cases, your theme will show the exact same menu on desktop and mobile (it will just be displayed differently depending on the width of your browser). Therefore, it is not usually possible to display one menu on desktop, and another menu on mobile.
However, there are plugins available which will let you add your own mobile menu (and hide the default menu on smaller screens), Please see this page for more details:
Configuring mobile menu plugins to work with Max Mega Menu