Hello. i used to be very lazy in school and was generally very unmotivated. at the same time i had a bully. could this be the cause of my bad grades

Could be the bully.: Honestly, it's very difficult to be successful in your schoolwork, and even to have the motivation to go to school at all, if you know that when you get to school you'll encounter a bully. People who are bullied at school can get bad grades as they're too distracted by the bully to concentrate. Sometimes they're even truant so they don't have to face the bully.