I'm assuming you go to Mizzou, based on your username. If not, feel free to disregard much of what I'm about to say.
First, recruitment is a very tumultuous process. I applaud you for doing what you did!!! (Listing #3 on your MRABA, giving them a chance, etc. Lots of girls drop altogether and never get to experience all that greek life has.)
Second, first semester is very chaotic and it can be hard to really bond. Most of the women I've spoken with have said that they didn't really bond with the chapter and feel very at home with everyone until sophomore year. I promise you that you are not alone in feeling the way you do right now!!
Third, the beauty of such a large greek system is that you can and should have friends in many other houses. It makes the entire system healthier when women are friends across houses and not just with women in their own house. There are a ton of great PHA opportunities to get involved with too, especially with such a dynamic Circle of Sisterhood program and other greek programming. Some women find that they get more fulfillment out of working with PHA than with their own chapters, and that is totally normal.
Fourth, the chapters are SO big it is easy to feel a little lost and not connect with sisters for a while. It takes time. I know that isn't easy to hear, but sometimes patience and perserverance is the best solution.
If you do end up transferring, I wish you the best and hope that you will consider joining an alumnae chapter some day. But, if you stay, just know that there are three and a half years left of experiences completely different from your first semester. With the stress of Homecoming and new member period, first semester is really, really unique.
Best of luck to you! Feel free to message me if you want to chat.