What should I do if I often quarrel with my sister?

From your description, you and your sister are used to quarreling, which is also a way to get along. As long as everyone doesn't hurt their feelings, it doesn't matter if it's not that serious. If you feel hurt. Then you can have a good talk with your sister, have a heart-to-heart talk, solve previous misunderstandings and talk about how to get along in the future. Because you are old after all, you should take the initiative.