How to change wp_nav_menu php code to change html markup?

Question

HTML

There is a menu that is built using the wp_nav_menu function. A sub-menu drops out of one item.
It is required to make it so that in one of the li-elements there is an input, followed by an input.
it should look like this:

<ul>
  <li><a></a></li>
  <li>
       <a></a>
       <input type="checkbox" name="toggle" id="menuBox" class="toggleMenu">
       <label for="menuBox" class="toggleMenu"><i class="icon-menu">Меню </i></label>
      <ul>
            <li></li>
            <li></li>
            <li></li>
      </ul>     
  </li>
  <li><a></a></li>
  <li><a></a></li>
</ul>

Answer 1

Hello!
Explore adding a custom walker for the menu. This way you can style and generally edit the menu.
Ready walker for bootstrap - https://github.com/wp-bootstrap/wp-bootstrap-navwalker
Useful link - https://codex.wordpress.org/Class_Reference/Walker