Why a blog doesn't work as an author website

Throughout the course of my writing 'career', I have made a ton of mistakes. Not just spelling and grammar mistakes (I'm sure I've made a million, but this is a blog things are more casual here than they would be in a book), I've made marketing mistakes as well. One of the most important things for any author is promoting their work via a website. Without a website there is little to no online visibility. Sure, I have social media and a blog, but I've been making a huge mistake by using this blog as a website. A good author's website usually does feature a blog, but not as the main feature. I don't update my blog as often as I would like to, causing it to look neglected. I've been neglecting my social media as well, which isn't the most wise thing I could do with a book release on the horizon. During the weekend I plan to figure out what I'm going to do with this blog and insert some type of homepage. Maybe I'll move to another blogging platform (I've heard good things about wordpress, but I'm the type of person who finds something she likes and sticks with it). Whatever my plan is, I will post it here.