Every social media platform contains an analytics section. Track your performance and review which content is producing the most engagement. You may consider posting similar content and boost your posts.

Facebook:
Post Reach – shares basic post statistics like impressions, engaged users, consumption and video views.
Post Engagement – shares basic engagement stats like engaged users, consumption and negative feedback
Instagram:
Recent Highlights – some general information about people are engaging with your profile, like how many followers you gained or lost in the past week
Twitter:
Tweet impressions – a list of all your Tweets and the number of impressions.
Tweet engagements and engagement rate – the number of interactions your Tweet has received, as well as the engagement rate