So I decided to accept admission to a University. I contacted 2 of the faculty in the department in my chief area of interest , but neither had an opening/ funding . I feel like it was a huge blunder on my part. Should I try to find an advisor in a different field or wait a semester and see if any new opening arrive?

If I start research in a different field and a spot opens up in my preferred field next semester, is it possible to switch?