What am I doing wrong?!

Some context, I started uploading videos late last year and i started getting a couple hundred to a couple thousand consistently, sometimes getting 10k or higher. But now out of nowhere my views have been stuck around 500. I also got rid of all my older videos with low views and then I uploaded a vid and it blew up (the one with 14k) and now I'm back at a couple hundred? Why? How do I fix this