In many ways, TikTok is kinda like channel surfing. Watch a few seconds, next channel, watch a few seconds, next channel, oh this is interesting, sure I'll watch a "How It's Made" marathon.
I've been making the same comparison as well. As someone not watching the videos yet still hear the videos being played, the constant switching is very noticeable much like being the one in the room that didn't have the clicker in their hand. You're not in control of the constant switching which I think makes it even that much more annoying.
Rather than just parking on the marathon, choosing to turn it off and do something else entirely is still my preferred "old man yells at clouds" option.
This is how TV broadcasts also work, though. You could even argue there's an algorithm behind TV broadcasts too - it's just a kinda poor human-run algorithm trying to maximize viewer numbers.
Unlike many people, I still often watch TV broadcasts to relax for exactly this reason - there's no decision fatigue since I don't need to choose what to watch. Usually there's only one channel with something that's even remotely interesting and it's kind of an obvious choice.
As a teenager, I used to torrent content I liked and scoff at my parents generation for letting tv feed then slop :)
It's hard to understand why TikTok is addictive from the outside, precisely because if you look at the app over someone's shoulder you'll see their tailored content, not yours.
Give the algorithm a couple weeks and it WILL find the weird thing that gets you to check. Maybe you find someone restoring books relaxing, or like toy commercials from where you were a kid, or are attentive on news of potential pandemics out of fear. It will learn.