Question about search engine optimization.

So, a question for my web-development readers. Why does this blog have 150 page views over day, 600 page views three days after that, and the following day the blog has 2400 page views. I honestly don't know why this blog has such wildly fluctuating readership. I'm not a tech guy so I don't know how it works. Yes, I like to see higher numbers. It was really exciting to see the readership balloon to 8900 back in 2017 (the highest daily total I'm aware of). But I have no idea why that happens. Any insight would be appreciated.