Here are a few polished versions of your line:
✨ Clean & narrative
“Back then, I was just a kid with a loving family, far from the packed stadiums, dazzling lights, and powerful anthems that would one day define an era of music.”
📖 More emotional flow
“Back then, I was just a kid with a loving family—completely unaware of the packed stadiums, dazzling lights, and powerful anthems that would one day shape an entire era of music.”
🎤 More cinematic
“I was just a kid with a loving family back then, far from the packed stadiums, flashing lights, and anthems that would one day define a generation.”
📱 Social media style
“Back then, I was just a kid with my family… never imagining the stadiums, lights, and music that would one day define an era 🎤✨”
If you want, I can continue the story or turn it into a full intro for a biography-style post.