I have a blog but have no followers, have any advice for me.?

I’ve had many blogs but have deleted them after a time. I mainly use my blogs for a reference base of things that interest me and don't mind sharing it with others. As I develop new interests I start new blogs for my new interest and since I never get any followers for a long time I delete the old ones. Right now I have a music video blog. Please tell me what I am doing wrong, why don't i get followers.? I can take advice. Thanks in advance.