ok so I want some advice plz??

Ok so idk who's in the wrong, me or my friends So, I was walking to 3rd period a little bit ago and the teacher hadn't come yet so everyone was waiting outside the door, my friends (A, K, & J) were all talking to each other and I decided to sneak up on them and playfully "push" K. Her and J got mad and started yelling at me because I came out of nowhere without warning. A was agreeing with them saying it was rude, which I can understand why they think that, but A wasn't yelling about it. I tried saying I was js playing around but they didn't see it as an "excuse". I can understand that I pushed her without warning and that can be rude, but now I'm js sitting by myself nonverbal because K and J both yelled at me for doing something that they always do to each other anyways???