Firdt you need to get the door closers adjusted (which is done using two hxagonal or Allen screw heads). The installers will always set these at the maximum “slam” because that guarantee s the door will close. You can have all the doors adjusted to a soft click. If that still doesn’t work, you can probably add the rubber strips provided the don’t interfere with the door cclosing properly (which is the key to all this).
So really what you need to do is put a motion to your Executive Committee (or strata manager) asking them to have the doors adjusted because they are breaching by-laws about not interfering with the peaceful enjoyment of other lots.