Hello,
I saw the screenshot you attached.
1) To Remove order by from the shop page you need to add the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.
.woocommerce-ordering {
display:none;
}
2) The text you are trying to translate is coming from a text editor. That’s why it’s not available for translation using loco.
You can change the text from Appearance >> Widgets >> Shop page widget area >> Categories.
Screenshot for Clarification: https://ibb.co/PjmMvwm
3) The uncategorized is the default category and you could not delete it. Therefore to hide it you need to add the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.
#woocommerce_product_categories-1 .cat-item-15 {
display: none;
}
Best Regards.