During the last confinement, when car traffic completely stopped, I realised that cars are the single biggest reason why living in the city can be unpleasant. People may not realise it consciously, but when they move out of the city, what they are looking for is a place with not as much cars driving around.
Cars destroy cities by making a vicious circle of making it unpleasant to live there, therefore enticing people to move to the suburbs and commute by car, which make the problem worse.
Setting up biking infrastructure fixes this, because it reduces the room for cars used by commuters, while creating room for bicycles used by people living in the city.
With less cars, you can make the city center where people work liveable. You can have offices mixed with housing and have people live close to their work place, further diminishing the need for cars.
If you think that your city can't possibly be a good place to cycle because weather / hills / etc, you are probably mistaken. Electric bikes and the appropriate clothes make biking pleasant in most places. IF there are not too many cars and infrastructure for the bicycle of course, which is probably the thing you don't have