How to hide subcategories from menu in wordpress and keep only categories?

I have web site, but there is menu where shown categories and subcategories. I need to hide subcategories. i suppose, here i need to change php code or change theme.

P.s. I use envo marketplace theme

Here is code of this menu:

https://github.com/PieceOfNachos/Stackoverflow/blob/main/wp-menu1.php