Well, I'd say that social media can make us feel insecure
Explanation:
Looking at other's posts about their life can make us feel a bit jealous of what that person has and we look at ourselves like we wish we had their lives and our lives are worse than theirs.
It would probably make us feel insecure or pretty good because you could probably be bullied online or you could make friends, it only happens if there is something that could cause the bullying or make us feel good like making friends or being called fat and ugly. There are many other feelings that affect the way we view ourselves.