Menu or Page?

Hello, I’m a bit confused.

My website is http://www.dbzexperts.com
I was wondering if the main menu should be set up from the menu section, with pages within the menu category? Or should the menu category be pages with more pages within. Currently I have custom menu set up, and pages within, but being that the menu has no URL (it’s just a drop down) I cannot access them via mobile devices.

Can someone give me advice? It’s a little hard to explain so excuse my ignorance.

What should I be doing?