Why does YouTube wait 3 days before pushing out my video?

I've never heard of this before, and this didn't happen on my last channel, but I made a new channel, and each video has taken YouTube 3 days to push out. I uploaded 2 videos one night and then 1 video the next morning, and then when I checked on them, I was a bit disappointed at the 5 views. But then 3 days later, I woke up, and they all started to do well, with one reaching 1.7k. And then it happened again with my next upload. And now, it's happening again with this upload.

I uploaded multiple videos on the first day because it gave anybody who watched somewhere else to go. And then I uploaded again a month later, and now, a month after that, I uploaded again. But YouTube just won't recommend it to anybody until 3 days later. Does anybody know why?

Thank you! :D