Does tiktok show you better videos when you threaten to leave with the back button?

I've never really used tiktok, but with Reddit shitting the bed it's time to expand my horizons and create a social media "mix"

So yesterday I'm watching tiktok for pretty much the first time having a real go at it, and I noticed when I'm scrolling the videos are all kinda meh, then I click back (to exit on android) and I get a "decent" one, so I hang around and watch it, then scrolling more meh, back, decent video. Is this a thing? I ended up just clicking back to game the system, if I really liked the video I would reward tiktok with a scroll, if it gives me a shit video, back again.

Am I nuts?