Yes, a locksmith can open your lock without damaging it, most locksmiths use a non-destructive way of opening the door to enter the property ensuring that the lock or door is not damaged. If you open the door successfully, call a locksmith. You've demonstrated how easy it is to get into your home and you should consider upgrading your locks. If all else fails, call a professional locksmith.
Locksmiths are experts at breaking and creating locks for your home or vehicle. They can also make you a copy of your key, in case you lose the original one. In any case, a locksmith will have the essential tools to open the lock without damaging the door. Yes, there are ways that can be implemented to open the door of a house or a car without keys, without damaging any object or anything.
Also, it might be smart for me to have a locksmith look at my lock to see if that's creating the problem. A key to your house or car with a key is not necessary when a locksmith uses specialized tools to help open locks. Your first instinct for what to do when you are locked is to call the authorities, but first you need to contact a locksmith who will immediately come to your location and open the door of your car or house for you quickly. Locksmiths aren't the cheapest option, but calling a professional locksmith is a surefire way to get back to your home.