And if you want to terminate your lease based on the conditions, you must first go through the formal notification process. An attorney can help you do this in compliance with the law.
Yes, the apartment has standard locks that are required. The tricky part is that the deadbolt is never broken, was only unlocked. Nothing is stolen. There’s no camera to technically confirm there was any thief/burglar who picked/bumped the lock at night at the backdoor. She even doubted if I sleep walk while I have no history and family history of that. That is why she doesn’t want to do anything.