Posting this from a hotel in Ohio . . .
I know you wrote it a long time ago, and maybe you forget what you wrote, but I’m writing to thank you for your letter.
It blew me away.
I’m glad that it touched you, inspired you to aspire to become a better, kinder person. I’m confident that you already are.
To answer your question, no, I was never bullied as a child. I suspect I was more like you, a bystander, a floater, and it took me a long time before I opened my eyes to see, as you wrote, “that regular people can make a difference.”