Display categories list in Wordpress without subcategories

I am attempting to show categories in a list, but without displaying subcatgories. My current code is:

cat_ID) != "") {
    echo "
";
    wp_list_categories('orderby=id&show_count=0&title_li=
&use_desc_for_title=1&child_of='.$this_category->cat_ID);
    echo "
";
  }
}?>

Which displays the categories nicely

but when I added a sub-category it looked like this:

Any ideas? Thanks!

Solved

Use get_categories() instead. https://developer.wordpress.org/reference/functions/get_categories/#Get_only_top_level_categories

It has "parent" parameter which you can set to 0 and get desired result.