Add streaming movie to Playlist or Collection

Is there a way to add a movie from a streaming service to a playlist or collection? Here's an example:

I've got the Fast & Furious movies 1-8 (plus Hobbes & Shaw) on my server, so I created a collection called Fast Saga. I don't own F9 or Fast X, both of which are currently available streaming on Peacock.

Can I add the two movies that I don't own to my Fast Saga collection (or a playlist) so that I have the full series, all in one place?