Why do the pigeons fly away?
These pigeons obviously are very streetwise and mistrust people. It’s not you, they know you’re the bread lady but they just don’t want to get close to any human. They may have had people take potshots at them with airguns etc. Here I’ve often seen little kids chase after the pigeons and it’s obvious that even toddlers are trying to step on them, or they throw rocks etc. Hope people are more civilized where you live, but from the bird’s reaction I’d say they have learned to be very, very shy. They appreciate the bread but don’t want any other contact.