Webview “only open external url” in browser

I’ve been trying for days and have already searched and tried here.
Since I’m from Germany, I’m probably looking for the wrong terms.

I would like every click on a link and the URL that is not available within https://domain.com to open the external link in the browser.
If I set follow links, everything opens in the app, if I set use browser, every link within the page opens in the browser.

So with every click on a link that does not belong to https://domain.com , the browser should open because I do not know the external URLs.

Please help a beginner once.
Thank you
Translated with Google

Ekran Alıntısı

this is not working