Problem with the PayPal Express Button

Hello everyone,

I have a problem with the PayPal Express Button and the deposited shipping method. There we offer this as a payment option If the customer does this, he will come back to the side where he still has to confirm his purchase. A shipping method is then always selected there. In the shop we offer two types of shipping - parcel delivery and collection. And with PayPal Express, pickup is always a defined or set shipping. The user is no longer asked in advance, but is already set automatically Can you define somewhere that instead of this pickup, the parcel delivery is fixed ?