Bicycle bells fall silent...

CAN someone please tell me why bicycles don’t have bells on them anymore and if they do why don’t people use them?

Cyclists ride on pavements. I thought bikes were meant to be ridden on the road?

Yesterday I spoke to a lad on a bike about this. His answer was: “I’m only a kid, I’m 13, I can’t go on the road’” By the way he was on his mobile phone at the time. Frustrated Pedestrian, Reddish