For all the YouTube power users: how do you organize the videos you save?

I’m curious how other people here deal with this.

I save a lot of YouTube videos. Tutorials, courses, talks, random videos I want to come back to later... and eventually my playlists start becoming a little chaotic. 😭

The part I find surprisingly annoying is deciding which playlist a new video belongs in. Sometimes I have several playlists where it could reasonably go, and I end up either overthinking it or just throwing it somewhere.

I recently started working with a small startup called Tortma, and this is actually the problem we're trying to solve. It made me curious about how other heavy YouTube users handle it.

How do you organize the YouTube videos you save?

Do you have a system, a ridiculous number of playlists, one giant Watch Later pile, or something else entirely?