How to find the code snippet responsible for menu generation?

Question

WordPress

It is not possible to find menu items by direct file search.
Also in the WordPress settings there are no menus and widgets with the specified items.
How can this menu be formed and how can it be found for editing?
I searched for files in the folder with the theme. Can the menu be written as a plugin, or is the implementation hidden somehow?

Answer 1

For convenience, you could post a link to your resource. But judging by the screenshot, your entire menu is in HTML, in the menuInner class by tags <li>.
If it is formed using JS, then in JS try to search by element id or by class, i.e.menuInner