How do unfollow ghost follower & make an account active?

Hi I am new to the forum and would like to say it's an awesome community.

I have a instagram account with quite a few thousand followers over 20k however they aren't really active I mean I don't know if they are ghost followers, or I am not posting the right content and/or at the right time.

But was wondering if there is a way to unfollow ghosts and also if anyone has a tip for getting people to like/comment on content.

Many Thanks Connor

Just leave them OP. A great way of getting your account active is start getting REAL followers by liking which worked great for me