First of all, thanks for your very relevant question!
As with anything in life, we have a choice to use any given thing for a greater good or for a bad purpose. Technology and social media are no different, as you rightly point out. They are only a “means” to an “end”. They serve as a tool in the evangelization toolbox to bring people to Christ.
In recent years, technology has expanded very quickly. The Church including the laity need to have a strong presence on social media in order to spread the Gospel of Jesus Christ. This includes sharing our Christian faith, values, lifestyle choices and reason for our hope and joy that comes from the only true source of all joy, Christ Himself. As with anything in life, pray about it and ask God to show you your role in spreading His Gospel message whether that be via social media or face to face with your neighbor or a member of your family.