The fire brigade will just destroy the gate if need be to save lives. They’ve done it before and won’t hesitate to do it again.
Nor will the police and ambos be gentle if there is an emergency.
As described the gate sounds partially complete. There needs to be a way for residents to view who is ringing the gate button for their residence and grant access to approved visitors.
Also, as it stands, any resident who is disabled might demand that there is a way for the gate to be opened from their residence if it is too arduous for them to make the long trek to the gate. And of course when it is raining no one wants do the walk.
Finally, why is it only locked at night? There are lots of break ins during the day.
Again, complete the requirements to make this a proper and secure gate and keep it locked 24 hours a day. There will need to be a method for the post person to enter to deliver mail but everybody else can buzz the resident they desire to visit.