Hello, Francesco Avolio,
You need to find and translate mentioned strings manually. For example, go to Loco Translate > Plugins > XStore Core > find “My account” and add translation for it https://prnt.sc/D7KevLdo3KKS > https://prnt.sc/XuVEGex4g92W
In this way, you need to find and translate all mentioned untranslated strings (for the theme, WooCommerce and Core).
There is no need to translate all existing strings, just texts that are visible on the frontend.
Kind Regards,
8theme team