In classic mode a List Filter Web Part is available but what to do in a modern site. Is it still possible to use a classic page in a modern site with the List Filter Web Part? If yes how if no, is there an other way?
To use a classic page in a Modern site I found How to bypass the new Modern Team Site Page experience.
To use a List Filter Web Part I read at Connect a Filter Web Part to a List View Web Part on a classic page.
But the Filter Web Part is not available in the categories on the classic page. Who can help me?