If you’re using Google Analytics, check out “consent mode.” You still need a banner but it can be super simple — there’s probably a plugin for your blogging platform.
You’re only required to have one if you’re in the EU or are actively targeting an EU audience. You can have EU visitors to your blog without having to worry about GDPR. (And in reality, they aren’t going to come after a personal blog using basic analytics. They fine companies doing egregious things where the fine is worth the effort.)