The car door handle is one of the primary mechanisms used to initiate the opening and closing of a vehicle, so it's important that it works properly. However, there are a number of things that can cause your car door handle to malfunction or stop working altogether. For example, the handle itself may break, which can prevent it from connecting with the latch. Additionally, the rods or wires that connect the handle to the latch can become disconnected or damaged, which can also inhibit the transfer of motion.
In most cases, the easiest way to open a car with a broken handle from outside is by using a pair of pliers or a vice grip. Use the tool to gently wedge between the door and the vehicle body to loosen the latch and free the car door handle.
If the pliers or vice grip do not work, try using a thick piece of cloth such as a towel or a rag to pad the door handle. This will help to reduce the likelihood of scratching or damaging the paint around the door handle. You can also try putting some heavy-duty tape such as duct tape around the handle, which will provide added protection.
If none of these tools or tricks work, you should call an auto repair shop or a locksmith to inspect the door handle and latch to determine what is preventing it from opening. If the problem is a broken door latch or handle, they will be able to fix it for you. In the meantime, you can try using another door to access your vehicle or ask a friend to let you in.