Regarding confronting bullies, my dad did this to my DB's bully. MyDB is 2 years older than me.
This lad, Nick, used to be sort of friends with my DB, in primary. I was friends with his rather older sister.
Nick went a bit off the rails in late primary, hanging out with known troublemakers from the next village.
One day, mum sent me and my bro to a local farm shop, where we encountered Nick with three mates. They cornered my DB and were smashing their bike front wheels into my DB's bike, name calling him etc til we managed to get away and cycle home where my DB burst into tears and ran upstairs.
I told dad what had happened, he grabbed mum's bike 😁 and we both set off to the farm shop. Nick and mates were just leaving.
My dad verbally tore Nick a second asshole, as I stood by, smirking. He told the two lads from the next village to sod off back there, and told the third older lad who had mild LD how disappointed his parents would be (whom we knew, this was a small village!) if they knew who he was hanging out with, and told Nick that if he ever so much as looked at DB again, there'd be a knock on his parents door, and it wouldn't be the police standing there, it would be him!
God, it was so satisfying.
The bullying stopped there and then. And boy, was he sheepish towards me in school the next day. I readily admit I told everyone what had happened!