https://www.verywellfamily.com/reasons-why-kids-are-bullied-460777
There's 3 that you fall under And I'm wondering which one resonates with you most..
Vulnerable
Children who are introverted, anxious, or submissive are more likely to be bullied3 than kids who are extroverted and assertive. In fact, some researchers believe that kids who lack self-esteem may attract kids who are prone to bully. What's more, kids who engage in people-pleasing are often targeted by bullies because they are easy to manipulate.4
Research shows that kids suffering from depression or stress-related conditions may also be more likely to be bullied, which often makes the condition worse. Bullies select these kids because they are an easy mark and less likely to fight back. Most bullies want to feel powerful, so they often choose kids that are weaker than them.