whatever way makes you most likely to write!
the best blog is the one that gets updated, so my recommendation is to start with something like Hashnode or Dev.to to develop the habit of publishing, and then build a custom blog once you've created enough of a content habit to justify the effort
building a custom blog is very tempting, but I've often found that trying to optimize things is a very productive-feeling form of procrastination
so don't overthink it! just publish!