My tips would just be stay present, talk to your readers, be active on social media as you are doing, leave genuine comments on other blogs and focus on building a community x (simplycantara.com)
I know this post is all about engagement, but I'd rather get 10 really genuine comments than 100 generic emojis or «omg fab» comments. (thechampagneedit.com)
leave a quality genuine comment on their post - that is more than 5 words, anything less than 5 words is considered poorly for SEO purposes, and actually reflects badly for the bloggers article. (uniquejunktique.com)