Sometimes people outgrow their chapters, or they get burned out. I have seen it happen. It is sad. Some people just fit in better. I think that if you have interests outside of your sorority, it might enhance your sorority and your college experiences.
I hope that you are able to find what you are looking for from your sorority.
Perhaps you should talk to your sisterhood chair and chapter president with your concerns. They might be able to give you constructive advice that is specific to your chapter and your concerns. It is difficult for me to give advice when I don't know you, your chapter, or your situation personally. I wish you the best.