That worked ! Thanks @baris
UNSOLVED If there are too many sub categories, they will not be displayed on the homepage and categories page.
If there are too many subcategories under a category, these categories are not displayed on the main page and on the categories page in the Admin panel. 10 categories under a category are displayed on the main page. More than 10 are not displayed.
You can increase that number in the settings of the category.