Why do some of my posts get 0 views?

I have an account with almost 2k followers, and I have a few viral videos ranging from 300k-1.2 million views. My others are in the couple thousand.

Sometimes I post a video and it gets 0 views though.

I figured out if I post a video under 6 seconds this happens, but my most recent video is 13 seconds. It’s just a video of me outside with a funny caption, nothing that should go against policy. I posted it yesterday morning and as of today it is at 2 views (assuming the people went onto my page and the viewed it).

What reasons make it so a video gets 0 views?