public library search

I would love to have a shortcut that takes a text input and opens the search results of
Unfortunately it is a webapp without any search query parameters in the url and it is only usable with http requests, I think. But I am no coder, so I don’t know how to do this. It must have something to do with retrieving a session ID and then sending the form, but that is how far I got.

Can someone hint me into a direction or link me a shortcut that does something similar?

Update: I‘ve found a way to use an url. Here is the shortcut. Shortcuts