If the plugin is semi-automatic, there might be a specific reason behind the default selection.
However.... if you want "AliExpress Standard Shipping" as the primary shipping method, I recommend contacting the AliDropship support team. They should be able to provide guidance on how to customize the plugin settings to suit your preferences.
By the way, have you considered using Shopify for your e-commerce needs? They offer a variety of features, including the convenient
Shopify Flat Rate Shipping, which can simplify your shipping process. It's worth exploring if you're looking for a seamless shipping solution.