I feel so lonely help please...?

So today I was helping my mom bring in the shopping in and she was favoring my brother ( I am the youngest) She kept shouting at me to put the bags in while I was doing something else .Then she called me a cheeky wagon and my brother and mom went inside leaving me outside and they wouldn't open the door . Later I managed to get in by the window , so later I was in the living room on my laptop doing some work (im 13) and she kept bickering and annoying me so I politely asked her can we talk later because im busy next of all she grabbed my laptop threw it on the ground and hit me in the face and arm its makes my life worse because I have no friends what should I do? :(