What sport should I try?

I'm a 17 year old female. Last november i had a severe knee injury resulting in a torn ACL, MCL, and a degenerative meniscus tear. Prior to my injury i was a competitive level 5 all star cheerleader. The only sports i've ever done are dance, gymnastics, and cheer. My doctor told me it was not wise to return to cheer, but I would still very much like to put my time and energy into something else. I was thinking along the lines of crew(rowing), tennis, lacrosse, squash. Could someone please give me insight as to how hard it would be to jump into one of these sports (i learn very quickly and would be fully committed) or perhaps offer another one? If it helps, I attend boarding school so if you know of any other interesting sports in that realm it would be much appreciated. Thank you so much. :)