It requires code customization, need to develop a plugin to integrate with a new shipping provider.
You can see our examples in folder platform/plugins.
Ex: platform/plugins/shippo
You will need to make the same structure and handle events when checkout to implement a new shipping option.
The main file platform/plugins/shippo/src/Providers/HookServiceProvider.php
Setting in the admin panel platform/plugins/shippo/resources/views/settings.blade.php
Shipping option at the checkout page
platform/plugins/shippo/resources/views/rate.blade.php
