Traffic shouldn’t be stopping for people crossing, but the other way around.

Cars are faster, heavier, slow to stop, less nimble in general and all action suffer from drivers reaction time.

It’s way easier for people crossing to respond to moving cars, wait for traffic to clear, then cross.

If a location doesn’t have a sensible way for people to cross because traffic is usually continuously steady, they can put a crossing bridge or tunnel like many places in the world.