Easy+free option might be making a static site on github. Basically you write your posts in some easy to write format like markdown and then run a command to generate the HTML from it, then commit the whole thing to a git repository. Look up “static site generator” for various tools to help you do that. The site’ll be hosted on your-username.github.io. Unlimited flexibility as you can tweak the styles and how the generation happens as you want and there’s virtually no limits as long as you’re just posting text and the occasional image. A lot of programmer blogs I’ve seen are run this way but ofc can write about whatever you want on there :)