having not gotten a bid

I rushed a couple of frats this quarter, and did not get an invite to the pref/invite nights, forget the bid. For someone who has been super social throughout high school, goes out to parties, plays sports, academically strong, why did that happen? I am a second year and I want to join a frat as soon as possible so that I could enjoy UCSD. As of now, I do nothing apart from study for my classes and work a bit for my engineering society, 0 social aspect to my life at UCSD at least, and this is making me think of a transfer.

Any thoughts on this? How is winter rush compared to other quarters?

Also, I do find it stupid to transfer just because I have not had a social life in UCSD till now. So, is there anything I should keep in mind before rushing in winter? Anything that will work towards me getting that bid? I know you have to meet as many people as possible, and that did happen when I rushed. At a point, it became difficult to find people in the chapter who I had not spoken to, and ended up getting to know the other guys a little better, which is good as well.

I have been pretty low since rush week, and it kinda messed up my quarter as well, however I am willing to give it another go. It would be great if you could help me on this :)