I want to add all search results to a playlist in YouTube. The quickest way to do this seems to click the "watch later" icon on every video (1 click). Adding each video to an individual playlist is much slower (4 clicks)

However I want to create individual playlists for different searches, so I want to move all videos from the "watch later" playlist to a new one (simultaneously), so I can keep a structure.

I want to add YouTube search results to a playlist. The quickest way to save them temporarily seems to be to add them to "Watch Later" which requires only one click per video. Adding each video to a YouTube playlist is much slower, requiring 4 clicks per video.

Ultimately, I want to create individual playlists from the results of different searches.

How can I move the entire contents of "Watch Later", which can be as many as 5,000 videos, to a YouTube playlist in a single step or as few as possible?