Redirect unwanted (yet working) "tagged" URLs

I have a lot of these unwanted, extra collection pages that were created by unused filters in the code (not visible on the page).

We have deleted the links in the code to these pages, but Google has already found a few hundred of them.

For example this

https://www.jasswelt.ch/collections/poker-1/poker

which is duplicated content with

https://www.jasswelt.ch/collections/poker-1/

The “unwanted” URL shows the html-title with “getaggt” which in English versions is “tagged”, so it is clearly not a URL I want to be indexed by Google.

thanks for any help!