The blog that I started ~13 years ago started as 3 .html files. Everything else followed as needed (styling, rss, comments, etc.). If you can get past building it, the next question becomes "What should I write about?" [0]

My answer is usually that you can write whatever you want on your websites. It's yours after all. None of the limitations that exist on third-party platforms exist. You can make all the pages read upside down if you want to.

[0]: https://idiallo.com/blog/what-should-i-write-about