Pretty much, most of the famous bloggers have their YouTube channel which they have build up from the ground up. For example I follow John Chow at https://www.johnchow.com/
He has one of the biggest blogs in the world. I didn’t find John Chow though his blog, I found John Chow though his YouTube Channel and with his YouTube channel I saw his blog. So I think some people can find one though the search engines but social media is the way to go. Your topic of your blog is be the a big factor on how well you will do with your blog.
You must blog about something that people look for all the time. It takes a long time to become a famous blogger. The people who are consistent in blogging makes the most money overall. The famous blogger in the world have been blogging for a long time so you may expect that going into it.