I need help with my site dropdown menu

Hi everyone,

I have spent about 3 hours searching the Squarespace forums, internet, and even trying to learn CSS myself to resolve an issue I have with the Header Navigation Bar.

In short: I want the dropdown menus to appear less cramp and spread out, and I would like to include picture into my dropdown menu as well.

This is my current dropdown menu;

and this is how I want it to be like:

If anyone has solutions to any or all of these requests I would greatly appreciate it.

Thank you

I have found this to be a great solution: https://www.will-myers.com/articles/building-a-mega-menu-in-squarespace-71-free 

(You add a section to the footer then move the footer into the nav)

There's a paid version that is easier to install if you get stuck - https://www.will-myers.com/products/p/mega-menu-for-squarespace-71