Why Do You Think Some People Enjoy Antagonizing Others?

I've experienced this many times and is one of the causes why I developed Severe Depressive Disorder (I was diagnosed by a psychiatrist and have attended therapy, in-person and online on and off for the past 9 years). I am also a hypersensitive individual so my emotions are usually at a high intensity depending on the kind of environment and type of people I am surrounded with. I'm not aware of having hurt them for them to resort to this behavior so I'm left wondering: "Why me? What wrong did I do to you?" Do you experience this feeling wherein you feel like many people are against you whether you do good or make mistakes? How do you manage your emotional sensitivity and mental health among family, friends, classmates, coworkers, or even by yourself? What has helped you?