I don't really believe in
"following back"
I do certainly follow back people, But you must understand everyone is busy and everyone has different interests.
I think best way is to focus on improving what you're blogging about then go and find the people who might be interested in visiting your blog.
For example, I'm not interested in politics and if someone blogging about politics follows me and engage with my content then I'll certainly follow them but may not visit their blog for the sake of they're following me. But I might become interested in politics in the future and that person might change their blogging subjects.
Think long term!!!
Yup! That's my attitude too. Cheers!