Youtube film downloading and decrypting

[rippernoobie]

Premise: I am very new to the world of widevine and DRM decrypting, so forgive me if I do not understand things immediately
So, some days ago I started to try to download some videos I bought. I first started to try and I was successfull in getting a L3 key from an old rooted phone, however now I am stuck in trying to download this film: https://www.youtube.com/watch?v=G4-XnzoTeT8&ab_channel=YouTubeMovies that I bought from google play movies.
Thanks to yt-dlp I have already downloaded the audio and the video, however I cannot retrieve nor the KID, nor the KEY to decrypt it.
Now because I have a discrete library of content on yt, I would like to know, if possible, how can I retrive at least the PSSH and the server: I tried with EME tampermonkey, but after I put the PSSH into wks-keys it crashes with an exception. Could you guys please help me?

[Baldrick]

Please read this
https://forum.videohelp.com/threads/404993-Please-ONLY-ask-for-help-videos-that-everyo...-can-access%21