> I feel that bikes and electric scooters are more dangerous than cars.

How do you get this idea? In a collision with a pedestrian, the person on the scooter/bike will come to harm more likely than the pedestrian. But such collisions do not happen too often, and when they do, they don't go as bad as car crashes. I live in a German City (Darmstadt) where next to the big roads as well as in the city centre bikes and pedestrians share a lot of place, and it is not a big problem that people keep getting hurt because of this. Most accidents in these places are because bikers had accidents due to bad roads, hidden stairs, car drivers, bad bike lanes, etc. If you ask me, making a city nore bike friendly, also close to pedestrian areas, decreases the chances of bikers getting hurt.